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				@@ -1,4 +1,4 @@ 
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				-#pragma warning disable CS1591 
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				+#pragma warning disable CS1591, SA1401 
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				 using System; 
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				 using System.Collections.Generic; 
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				@@ -23,7 +23,7 @@ using Microsoft.Extensions.Logging; 
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				 namespace MediaBrowser.Providers.Music 
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				 { 
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				-    public class MusicBrainzAlbumProvider : IRemoteMetadataProvider<MusicAlbum, AlbumInfo>, IHasOrder 
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				+    public class MusicBrainzAlbumProvider : IRemoteMetadataProvider<MusicAlbum, AlbumInfo>, IHasOrder, IDisposable 
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				     { 
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				         /// <summary> 
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				         /// For each single MB lookup/search, this is the maximum number of 
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				@@ -36,7 +36,7 @@ namespace MediaBrowser.Providers.Music 
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				         /// The Jellyfin user-agent is unrestricted but source IP must not exceed 
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				         /// one request per second, therefore we rate limit to avoid throttling. 
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				         /// Be prudent, use a value slightly above the minimun required. 
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				-        /// https://musicbrainz.org/doc/XML_Web_Service/Rate_Limiting 
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				+        /// https://musicbrainz.org/doc/XML_Web_Service/Rate_Limiting. 
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				         /// </summary> 
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				         private readonly long _musicBrainzQueryIntervalMs; 
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				@@ -302,181 +302,6 @@ namespace MediaBrowser.Providers.Music 
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				             return ReleaseResult.Parse(reader).FirstOrDefault(); 
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				         } 
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				-        private class ReleaseResult 
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				-        { 
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				-            public string ReleaseId; 
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				-            public string ReleaseGroupId; 
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				-            public string Title; 
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				-            public string Overview; 
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				-            public int? Year; 
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				- 
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				-            public List<ValueTuple<string, string>> Artists = new List<ValueTuple<string, string>>(); 
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				- 
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				-            public static IEnumerable<ReleaseResult> Parse(XmlReader reader) 
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				-            { 
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				-                reader.MoveToContent(); 
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				-                reader.Read(); 
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				- 
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				-                // Loop through each element 
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				-                while (!reader.EOF && reader.ReadState == ReadState.Interactive) 
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				-                { 
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				-                    if (reader.NodeType == XmlNodeType.Element) 
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				-                    { 
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				-                        switch (reader.Name) 
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				-                        { 
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				-                            case "release-list": 
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				-                                { 
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				-                                    if (reader.IsEmptyElement) 
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				-                                    { 
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				-                                        reader.Read(); 
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				-                                        continue; 
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				-                                    } 
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				- 
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				-                                    using var subReader = reader.ReadSubtree(); 
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				-                                    return ParseReleaseList(subReader).ToList(); 
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				-                                } 
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				- 
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				-                            default: 
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				-                                { 
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				-                                    reader.Skip(); 
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				-                                    break; 
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				-                                } 
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				-                        } 
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				-                    } 
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				-                    else 
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				-                    { 
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				-                        reader.Read(); 
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				-                    } 
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				-                } 
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				- 
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				-                return Enumerable.Empty<ReleaseResult>(); 
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				-            } 
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				- 
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				-            private static IEnumerable<ReleaseResult> ParseReleaseList(XmlReader reader) 
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				-            { 
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				-                reader.MoveToContent(); 
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				-                reader.Read(); 
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				- 
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				-                // Loop through each element 
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				-                while (!reader.EOF && reader.ReadState == ReadState.Interactive) 
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				-                { 
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				-                    if (reader.NodeType == XmlNodeType.Element) 
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				-                    { 
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				-                        switch (reader.Name) 
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				-                        { 
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				-                            case "release": 
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				-                                { 
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				-                                    if (reader.IsEmptyElement) 
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				-                                    { 
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				-                                        reader.Read(); 
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				-                                        continue; 
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				-                                    } 
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				- 
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				-                                    var releaseId = reader.GetAttribute("id"); 
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				- 
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				-                                    using var subReader = reader.ReadSubtree(); 
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				-                                    var release = ParseRelease(subReader, releaseId); 
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				-                                    if (release != null) 
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				-                                    { 
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				-                                        yield return release; 
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				-                                    } 
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				- 
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				-                                    break; 
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				-                                } 
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				- 
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				-                            default: 
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				-                                { 
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				-                                    reader.Skip(); 
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				-                                    break; 
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				-                                } 
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				-                        } 
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				-                    } 
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				-                    else 
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				-                    { 
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				-                        reader.Read(); 
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				-                    } 
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				-                } 
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				-            } 
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				- 
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				-            private static ReleaseResult ParseRelease(XmlReader reader, string releaseId) 
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				-            { 
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				-                var result = new ReleaseResult 
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				-                { 
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				-                    ReleaseId = releaseId 
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				-                }; 
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				- 
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				-                reader.MoveToContent(); 
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				-                reader.Read(); 
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				- 
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				-                // http://stackoverflow.com/questions/2299632/why-does-xmlreader-skip-every-other-element-if-there-is-no-whitespace-separator 
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				- 
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				-                // Loop through each element 
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				-                while (!reader.EOF && reader.ReadState == ReadState.Interactive) 
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				-                { 
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				-                    if (reader.NodeType == XmlNodeType.Element) 
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				-                    { 
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				-                        switch (reader.Name) 
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				-                        { 
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				-                            case "title": 
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				-                                { 
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				-                                    result.Title = reader.ReadElementContentAsString(); 
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				-                                    break; 
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				-                                } 
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				- 
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				-                            case "date": 
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				-                                { 
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				-                                    var val = reader.ReadElementContentAsString(); 
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				-                                    if (DateTime.TryParse(val, out var date)) 
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				-                                    { 
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				-                                        result.Year = date.Year; 
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				-                                    } 
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				- 
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				-                                    break; 
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				-                                } 
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				- 
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				-                            case "annotation": 
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				-                                { 
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				-                                    result.Overview = reader.ReadElementContentAsString(); 
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				-                                    break; 
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				-                                } 
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				- 
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				-                            case "release-group": 
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				-                                { 
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				-                                    result.ReleaseGroupId = reader.GetAttribute("id"); 
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				-                                    reader.Skip(); 
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				-                                    break; 
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				-                                } 
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				- 
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				-                            case "artist-credit": 
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				-                                { 
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				-                                    using var subReader = reader.ReadSubtree(); 
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				-                                    var artist = ParseArtistCredit(subReader); 
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				- 
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				-                                    if (!string.IsNullOrEmpty(artist.Item1)) 
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				-                                    { 
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				-                                        result.Artists.Add(artist); 
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				-                                    } 
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				- 
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				-                                    break; 
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				-                                } 
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				- 
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				-                            default: 
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				-                                { 
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				-                                    reader.Skip(); 
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				-                                    break; 
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				-                                } 
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				-                        } 
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				-                    } 
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				-                    else 
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				-                    { 
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				-                        reader.Read(); 
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				-                    } 
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				-                } 
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				- 
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				-                return result; 
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				-            } 
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				-        } 
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				- 
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				         private static (string, string) ParseArtistCredit(XmlReader reader) 
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				         { 
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				             reader.MoveToContent(); 
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				@@ -496,6 +321,7 @@ namespace MediaBrowser.Providers.Music 
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				                             using var subReader = reader.ReadSubtree(); 
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				                             return ParseArtistNameCredit(subReader); 
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				                         } 
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				+ 
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				                         default: 
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				                         { 
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				                             reader.Skip(); 
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				@@ -707,6 +533,9 @@ namespace MediaBrowser.Providers.Music 
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				         /// A number of retries shall be made in order to try and satisfy the request before 
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				         /// giving up and returning null. 
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				         /// </summary> 
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				+        /// <param name="url">Address of MusicBrainz server.</param> 
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				+        /// <param name="cancellationToken">CancellationToken to use for method.</param> 
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				+        /// <returns>Returns response from MusicBrainz service.</returns> 
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				         internal async Task<HttpResponseMessage> GetMusicBrainzResponse(string url, CancellationToken cancellationToken) 
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				         { 
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				             await _apiRequestLock.WaitAsync(cancellationToken).ConfigureAwait(false); 
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				@@ -762,5 +591,195 @@ namespace MediaBrowser.Providers.Music 
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				         { 
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				             throw new NotImplementedException(); 
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				         } 
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				+ 
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				+        protected virtual void Dispose(bool disposing) 
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				+        { 
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				+            if (disposing) 
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				+            { 
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				+                _apiRequestLock?.Dispose(); 
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				+            } 
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				+        } 
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				+ 
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				+        /// <inheritdoc /> 
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				+        public void Dispose() 
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				+        { 
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				+            Dispose(true); 
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				+            GC.SuppressFinalize(this); 
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				+        } 
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				+ 
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				+        private class ReleaseResult 
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				+        { 
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				+            public string ReleaseId; 
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				+            public string ReleaseGroupId; 
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				+            public string Title; 
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				+            public string Overview; 
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				+            public int? Year; 
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				+ 
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				+            public List<ValueTuple<string, string>> Artists = new List<ValueTuple<string, string>>(); 
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				+ 
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				+            public static IEnumerable<ReleaseResult> Parse(XmlReader reader) 
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				+            { 
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				+                reader.MoveToContent(); 
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				+                reader.Read(); 
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				+ 
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				+                // Loop through each element 
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				+                while (!reader.EOF && reader.ReadState == ReadState.Interactive) 
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				+                { 
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				+                    if (reader.NodeType == XmlNodeType.Element) 
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				+                    { 
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				+                        switch (reader.Name) 
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				+                        { 
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				+                            case "release-list": 
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				+                                { 
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				 | 
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				+                                    if (reader.IsEmptyElement) 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    { 
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				+                                        reader.Read(); 
			 | 
		
	
		
			
				 | 
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				+                                        continue; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    using var subReader = reader.ReadSubtree(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    return ParseReleaseList(subReader).ToList(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                            default: 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    reader.Skip(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    break; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                        } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    else 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                        reader.Read(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                return Enumerable.Empty<ReleaseResult>(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+            } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+            private static IEnumerable<ReleaseResult> ParseReleaseList(XmlReader reader) 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+            { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                reader.MoveToContent(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                reader.Read(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                // Loop through each element 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                while (!reader.EOF && reader.ReadState == ReadState.Interactive) 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    if (reader.NodeType == XmlNodeType.Element) 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                        switch (reader.Name) 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                        { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                            case "release": 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    if (reader.IsEmptyElement) 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                        reader.Read(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                        continue; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    var releaseId = reader.GetAttribute("id"); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    using var subReader = reader.ReadSubtree(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    var release = ParseRelease(subReader, releaseId); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    if (release != null) 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                        yield return release; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    break; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                            default: 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    reader.Skip(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    break; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                        } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    else 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                        reader.Read(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+            } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+            private static ReleaseResult ParseRelease(XmlReader reader, string releaseId) 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+            { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                var result = new ReleaseResult 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    ReleaseId = releaseId 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                }; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                reader.MoveToContent(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                reader.Read(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                // http://stackoverflow.com/questions/2299632/why-does-xmlreader-skip-every-other-element-if-there-is-no-whitespace-separator 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                // Loop through each element 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                while (!reader.EOF && reader.ReadState == ReadState.Interactive) 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    if (reader.NodeType == XmlNodeType.Element) 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                        switch (reader.Name) 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                        { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                            case "title": 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    result.Title = reader.ReadElementContentAsString(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    break; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                            case "date": 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    var val = reader.ReadElementContentAsString(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    if (DateTime.TryParse(val, out var date)) 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                        result.Year = date.Year; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    break; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                            case "annotation": 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    result.Overview = reader.ReadElementContentAsString(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    break; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                            case "release-group": 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    result.ReleaseGroupId = reader.GetAttribute("id"); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    reader.Skip(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    break; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                            case "artist-credit": 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    using var subReader = reader.ReadSubtree(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    var artist = ParseArtistCredit(subReader); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    if (!string.IsNullOrEmpty(artist.Item1)) 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                        result.Artists.Add(artist); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    break; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                            default: 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    reader.Skip(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                    break; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                                } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                        } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    else 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                        reader.Read(); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                    } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+                return result; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+            } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+        } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				     } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				 } 
			 |