Fix MetadataEntry endpoints, payload

API/Controllers/MetadataFetcherController.cs

@@ -97,7 +97,7 @@ public class MetadataFetcherController(MangaContext context) : Controller
     [ProducesResponseType(Status400BadRequest)]
     [ProducesResponseType<string>(Status404NotFound, "text/plain")]
     [ProducesResponseType<string>(Status500InternalServerError, "text/plain")]
-    public async Task<Results<Ok<MetadataEntry>, BadRequest, NotFound<string>, InternalServerError<string>>> LinkMangaMetadata (string MangaId, string MetadataFetcherName, [FromBody]string Identifier)
+    public async Task<Results<Ok, BadRequest, NotFound<string>, InternalServerError<string>>> LinkMangaMetadata (string MangaId, string MetadataFetcherName, [FromBody]string Identifier)
     {
         if (await context.Mangas.FirstOrDefaultAsync(m => m.Key == MangaId, HttpContext.RequestAborted) is not { } manga)
             return TypedResults.NotFound(nameof(MangaId));
@@ -107,9 +107,9 @@ public class MetadataFetcherController(MangaContext context) : Controller
         MetadataEntry entry = fetcher.CreateMetadataEntry(manga, Identifier);
         context.MetadataEntries.Add(entry);
         
-        if(await context.Sync(HttpContext.RequestAborted, GetType(), System.Reflection.MethodBase.GetCurrentMethod()?.Name) is { success: false } result)
+        if(await context.Sync(HttpContext.RequestAborted, GetType(), "Link Metadatafetcher") is { success: false } result)
             return TypedResults.InternalServerError(result.exceptionMessage);
-        return TypedResults.Ok(entry);
+        return TypedResults.Ok();
     }
 
     /// <summary>
@@ -136,7 +136,7 @@ public class MetadataFetcherController(MangaContext context) : Controller
                 .ExecuteDeleteAsync(HttpContext.RequestAborted) < 1)
             return TypedResults.StatusCode(Status412PreconditionFailed);
         
-        if(await context.Sync(HttpContext.RequestAborted, GetType(), System.Reflection.MethodBase.GetCurrentMethod()?.Name) is { success: false } result)
+        if(await context.Sync(HttpContext.RequestAborted, GetType(), "Unlink Metadatafetcher") is { success: false } result)
             return TypedResults.InternalServerError(result.exceptionMessage);
         return TypedResults.Ok();
     }

API/Migrations/Manga/20251014114546_MetadataFetcherNotDBEntity.Designer.cs

@@ -0,0 +1,533 @@
+// <auto-generated />
+using API.Schema.MangaContext;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace API.Migrations.Manga
+{
+    [DbContext(typeof(MangaContext))]
+    [Migration("20251014114546_MetadataFetcherNotDBEntity")]
+    partial class MetadataFetcherNotDBEntity
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.9")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("API.MangaConnectors.MangaConnector", b =>
+                {
+                    b.Property<string>("Name")
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.PrimitiveCollection<string[]>("BaseUris")
+                        .IsRequired()
+                        .HasMaxLength(256)
+                        .HasColumnType("text[]");
+
+                    b.Property<bool>("Enabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("IconUrl")
+                        .IsRequired()
+                        .HasMaxLength(2048)
+                        .HasColumnType("character varying(2048)");
+
+                    b.PrimitiveCollection<string[]>("SupportedLanguages")
+                        .IsRequired()
+                        .HasMaxLength(8)
+                        .HasColumnType("text[]");
+
+                    b.HasKey("Name");
+
+                    b.ToTable("MangaConnector");
+
+                    b.HasDiscriminator<string>("Name").HasValue("MangaConnector");
+
+                    b.UseTphMappingStrategy();
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.Author", b =>
+                {
+                    b.Property<string>("Key")
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<string>("AuthorName")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)");
+
+                    b.HasKey("Key");
+
+                    b.ToTable("Authors");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.Chapter", b =>
+                {
+                    b.Property<string>("Key")
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<string>("ChapterNumber")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("character varying(10)");
+
+                    b.Property<bool>("Downloaded")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("FileName")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<string>("ParentMangaId")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<string>("Title")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<int?>("VolumeNumber")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Key");
+
+                    b.HasIndex("ParentMangaId");
+
+                    b.ToTable("Chapters");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.FileLibrary", b =>
+                {
+                    b.Property<string>("Key")
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<string>("BasePath")
+                        .IsRequired()
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<string>("LibraryName")
+                        .IsRequired()
+                        .HasMaxLength(512)
+                        .HasColumnType("character varying(512)");
+
+                    b.HasKey("Key");
+
+                    b.ToTable("FileLibraries");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.Manga", b =>
+                {
+                    b.Property<string>("Key")
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<string>("CoverFileNameInCache")
+                        .HasMaxLength(512)
+                        .HasColumnType("character varying(512)");
+
+                    b.Property<string>("CoverUrl")
+                        .IsRequired()
+                        .HasMaxLength(512)
+                        .HasColumnType("character varying(512)");
+
+                    b.Property<string>("Description")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("DirectoryName")
+                        .IsRequired()
+                        .HasMaxLength(1024)
+                        .HasColumnType("character varying(1024)");
+
+                    b.Property<float>("IgnoreChaptersBefore")
+                        .HasColumnType("real");
+
+                    b.Property<string>("LibraryId")
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(512)
+                        .HasColumnType("character varying(512)");
+
+                    b.Property<string>("OriginalLanguage")
+                        .HasMaxLength(8)
+                        .HasColumnType("character varying(8)");
+
+                    b.Property<byte>("ReleaseStatus")
+                        .HasColumnType("smallint");
+
+                    b.Property<long?>("Year")
+                        .HasColumnType("bigint");
+
+                    b.HasKey("Key");
+
+                    b.HasIndex("LibraryId");
+
+                    b.ToTable("Mangas");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.MangaConnectorId<API.Schema.MangaContext.Chapter>", b =>
+                {
+                    b.Property<string>("Key")
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<string>("IdOnConnectorSite")
+                        .IsRequired()
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<string>("MangaConnectorName")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.Property<string>("ObjId")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<bool>("UseForDownload")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("WebsiteUrl")
+                        .HasMaxLength(512)
+                        .HasColumnType("character varying(512)");
+
+                    b.HasKey("Key");
+
+                    b.HasIndex("ObjId");
+
+                    b.ToTable("MangaConnectorToChapter");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.MangaConnectorId<API.Schema.MangaContext.Manga>", b =>
+                {
+                    b.Property<string>("Key")
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<string>("IdOnConnectorSite")
+                        .IsRequired()
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<string>("MangaConnectorName")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.Property<string>("ObjId")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<bool>("UseForDownload")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("WebsiteUrl")
+                        .HasMaxLength(512)
+                        .HasColumnType("character varying(512)");
+
+                    b.HasKey("Key");
+
+                    b.HasIndex("ObjId");
+
+                    b.ToTable("MangaConnectorToManga");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.MangaTag", b =>
+                {
+                    b.Property<string>("Tag")
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.HasKey("Tag");
+
+                    b.ToTable("Tags");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.MetadataFetchers.MetadataEntry", b =>
+                {
+                    b.Property<string>("MetadataFetcherName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Identifier")
+                        .HasColumnType("text");
+
+                    b.Property<string>("MangaId")
+                        .IsRequired()
+                        .HasColumnType("character varying(64)");
+
+                    b.HasKey("MetadataFetcherName", "Identifier");
+
+                    b.HasIndex("MangaId");
+
+                    b.ToTable("MetadataEntries");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.MetadataFetchers.MetadataFetcher", b =>
+                {
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<string>("MetadataEntry")
+                        .IsRequired()
+                        .HasMaxLength(21)
+                        .HasColumnType("character varying(21)");
+
+                    b.HasKey("Name");
+
+                    b.ToTable("MetadataFetcher");
+
+                    b.HasDiscriminator<string>("MetadataEntry").HasValue("MetadataFetcher");
+
+                    b.UseTphMappingStrategy();
+                });
+
+            modelBuilder.Entity("AuthorToManga", b =>
+                {
+                    b.Property<string>("AuthorIds")
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<string>("MangaIds")
+                        .HasColumnType("character varying(64)");
+
+                    b.HasKey("AuthorIds", "MangaIds");
+
+                    b.HasIndex("MangaIds");
+
+                    b.ToTable("AuthorToManga");
+                });
+
+            modelBuilder.Entity("MangaTagToManga", b =>
+                {
+                    b.Property<string>("MangaTagIds")
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<string>("MangaIds")
+                        .HasColumnType("character varying(64)");
+
+                    b.HasKey("MangaTagIds", "MangaIds");
+
+                    b.HasIndex("MangaIds");
+
+                    b.ToTable("MangaTagToManga");
+                });
+
+            modelBuilder.Entity("API.MangaConnectors.Global", b =>
+                {
+                    b.HasBaseType("API.MangaConnectors.MangaConnector");
+
+                    b.HasDiscriminator().HasValue("Global");
+                });
+
+            modelBuilder.Entity("API.MangaConnectors.MangaDex", b =>
+                {
+                    b.HasBaseType("API.MangaConnectors.MangaConnector");
+
+                    b.HasDiscriminator().HasValue("MangaDex");
+                });
+
+            modelBuilder.Entity("API.MangaConnectors.MangaPark", b =>
+                {
+                    b.HasBaseType("API.MangaConnectors.MangaConnector");
+
+                    b.HasDiscriminator().HasValue("MangaPark");
+                });
+
+            modelBuilder.Entity("API.MangaConnectors.Mangaworld", b =>
+                {
+                    b.HasBaseType("API.MangaConnectors.MangaConnector");
+
+                    b.HasDiscriminator().HasValue("Mangaworld");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.MetadataFetchers.MyAnimeList", b =>
+                {
+                    b.HasBaseType("API.Schema.MangaContext.MetadataFetchers.MetadataFetcher");
+
+                    b.HasDiscriminator().HasValue("MyAnimeList");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.Chapter", b =>
+                {
+                    b.HasOne("API.Schema.MangaContext.Manga", "ParentManga")
+                        .WithMany("Chapters")
+                        .HasForeignKey("ParentMangaId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("ParentManga");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.Manga", b =>
+                {
+                    b.HasOne("API.Schema.MangaContext.FileLibrary", "Library")
+                        .WithMany()
+                        .HasForeignKey("LibraryId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.OwnsMany("API.Schema.MangaContext.AltTitle", "AltTitles", b1 =>
+                        {
+                            b1.Property<string>("Key")
+                                .HasMaxLength(64)
+                                .HasColumnType("character varying(64)");
+
+                            b1.Property<string>("Language")
+                                .IsRequired()
+                                .HasMaxLength(8)
+                                .HasColumnType("character varying(8)");
+
+                            b1.Property<string>("MangaKey")
+                                .IsRequired()
+                                .HasColumnType("character varying(64)");
+
+                            b1.Property<string>("Title")
+                                .IsRequired()
+                                .HasMaxLength(256)
+                                .HasColumnType("character varying(256)");
+
+                            b1.HasKey("Key");
+
+                            b1.HasIndex("MangaKey");
+
+                            b1.ToTable("AltTitle");
+
+                            b1.WithOwner()
+                                .HasForeignKey("MangaKey");
+                        });
+
+                    b.OwnsMany("API.Schema.MangaContext.Link", "Links", b1 =>
+                        {
+                            b1.Property<string>("Key")
+                                .HasMaxLength(64)
+                                .HasColumnType("character varying(64)");
+
+                            b1.Property<string>("LinkProvider")
+                                .IsRequired()
+                                .HasMaxLength(64)
+                                .HasColumnType("character varying(64)");
+
+                            b1.Property<string>("LinkUrl")
+                                .IsRequired()
+                                .HasMaxLength(2048)
+                                .HasColumnType("character varying(2048)");
+
+                            b1.Property<string>("MangaKey")
+                                .IsRequired()
+                                .HasColumnType("character varying(64)");
+
+                            b1.HasKey("Key");
+
+                            b1.HasIndex("MangaKey");
+
+                            b1.ToTable("Link");
+
+                            b1.WithOwner()
+                                .HasForeignKey("MangaKey");
+                        });
+
+                    b.Navigation("AltTitles");
+
+                    b.Navigation("Library");
+
+                    b.Navigation("Links");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.MangaConnectorId<API.Schema.MangaContext.Chapter>", b =>
+                {
+                    b.HasOne("API.Schema.MangaContext.Chapter", "Obj")
+                        .WithMany("MangaConnectorIds")
+                        .HasForeignKey("ObjId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Obj");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.MangaConnectorId<API.Schema.MangaContext.Manga>", b =>
+                {
+                    b.HasOne("API.Schema.MangaContext.Manga", "Obj")
+                        .WithMany("MangaConnectorIds")
+                        .HasForeignKey("ObjId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Obj");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.MetadataFetchers.MetadataEntry", b =>
+                {
+                    b.HasOne("API.Schema.MangaContext.Manga", "Manga")
+                        .WithMany()
+                        .HasForeignKey("MangaId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Manga");
+                });
+
+            modelBuilder.Entity("AuthorToManga", b =>
+                {
+                    b.HasOne("API.Schema.MangaContext.Author", null)
+                        .WithMany()
+                        .HasForeignKey("AuthorIds")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("API.Schema.MangaContext.Manga", null)
+                        .WithMany()
+                        .HasForeignKey("MangaIds")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("MangaTagToManga", b =>
+                {
+                    b.HasOne("API.Schema.MangaContext.Manga", null)
+                        .WithMany()
+                        .HasForeignKey("MangaIds")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("API.Schema.MangaContext.MangaTag", null)
+                        .WithMany()
+                        .HasForeignKey("MangaTagIds")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.Chapter", b =>
+                {
+                    b.Navigation("MangaConnectorIds");
+                });
+
+            modelBuilder.Entity("API.Schema.MangaContext.Manga", b =>
+                {
+                    b.Navigation("Chapters");
+
+                    b.Navigation("MangaConnectorIds");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

API/Migrations/Manga/20251014114546_MetadataFetcherNotDBEntity.cs

@@ -0,0 +1,30 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace API.Migrations.Manga
+{
+    /// <inheritdoc />
+    public partial class MetadataFetcherNotDBEntity : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_MetadataEntries_MetadataFetcher_MetadataFetcherName",
+                table: "MetadataEntries");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddForeignKey(
+                name: "FK_MetadataEntries_MetadataFetcher_MetadataFetcherName",
+                table: "MetadataEntries",
+                column: "MetadataFetcherName",
+                principalTable: "MetadataFetcher",
+                principalColumn: "Name",
+                onDelete: ReferentialAction.Cascade);
+        }
+    }
+}

API/Migrations/Manga/MangaContextModelSnapshot.cs

@@ -480,15 +480,7 @@ namespace API.Migrations.Manga
                         .OnDelete(DeleteBehavior.Cascade)
                         .IsRequired();
 
-                    b.HasOne("API.Schema.MangaContext.MetadataFetchers.MetadataFetcher", "MetadataFetcher")
-                        .WithMany()
-                        .HasForeignKey("MetadataFetcherName")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-
                     b.Navigation("Manga");
-
-                    b.Navigation("MetadataFetcher");
                 });
 
             modelBuilder.Entity("AuthorToManga", b =>

API/Schema/MangaContext/Manga.cs

@@ -18,7 +18,6 @@ public class Manga : Identifiable
     public MangaReleaseStatus ReleaseStatus { get; internal set; }
     [StringLength(64)] public string? LibraryId { get; private set; }
     public FileLibrary? Library = null!;
-
     public ICollection<Author> Authors { get; internal set; } = null!;
     public ICollection<MangaTag> MangaTags { get; internal set; } = null!;
     public ICollection<Link> Links { get; internal set; } = null!;
@@ -31,13 +30,20 @@ public class Manga : Identifiable
     
     
     /// <exception cref="DirectoryNotFoundException">Library not loaded</exception>
-    [NotMapped] public string FullDirectoryPath => EnsureDirectoryExists();
+    [NotMapped]
+    [JsonIgnore]
+    public string FullDirectoryPath => EnsureDirectoryExists();
 
-    [NotMapped] public ICollection<string> ChapterIds => Chapters.Select(c => c.Key).ToList();
+    [NotMapped]
+    public ICollection<string> ChapterIds => Chapters.Select(c => c.Key).ToList();
+    [JsonIgnore]
     public ICollection<Chapter> Chapters = null!;
 
-    [NotMapped] public Dictionary<string, string> IdsOnMangaConnectors => MangaConnectorIds.ToDictionary(id => id.MangaConnectorName, id => id.IdOnConnectorSite);
-    [NotMapped] public ICollection<string> MangaConnectorIdsIds => MangaConnectorIds.Select(id => id.Key).ToList();
+    [NotMapped]
+    public Dictionary<string, string> IdsOnMangaConnectors => MangaConnectorIds.ToDictionary(id => id.MangaConnectorName, id => id.IdOnConnectorSite);
+    [NotMapped]
+    public ICollection<string> MangaConnectorIdsIds => MangaConnectorIds.Select(id => id.Key).ToList();
+    [JsonIgnore]
     public ICollection<MangaConnectorId<Manga>> MangaConnectorIds = null!;
 
     public Manga(string name, string description, string coverUrl, MangaReleaseStatus releaseStatus,

API/Schema/MangaContext/MangaContext.cs

@@ -99,10 +99,6 @@ public class MangaContext(DbContextOptions<MangaContext> options) : TrangaBaseCo
             .HasOne<Manga>(entry => entry.Manga)
             .WithMany()
             .OnDelete(DeleteBehavior.Cascade);
-        modelBuilder.Entity<MetadataEntry>()
-            .HasOne<MetadataFetcher>(entry => entry.MetadataFetcher)
-            .WithMany()
-            .OnDelete(DeleteBehavior.Cascade);
     }
 
     public async Task<Manga?> FindMangaLike(Manga other, CancellationToken token)

API/Schema/MangaContext/MetadataFetchers/MetadataEntry.cs

@@ -1,3 +1,4 @@
+using System.ComponentModel.DataAnnotations.Schema;
 using Microsoft.EntityFrameworkCore;
 using Newtonsoft.Json;
 
@@ -10,6 +11,7 @@ public class MetadataEntry
     public Manga Manga { get; init; } = null!;
     public string MangaId  { get; init; }
     [JsonIgnore]
+    [NotMapped]
     public MetadataFetcher MetadataFetcher { get; init; } = null!;
     public string MetadataFetcherName { get; init; }
     public string Identifier { get; init; }