Some docs

pandalib-core/src/main/java/fr/pandacube/lib/core/mc_version/MinecraftVersionList.java

@@ -51,6 +51,9 @@ public record MinecraftVersionList(
      * Gson Adapter that ensure the data in {@link MinecraftVersionList} is sorted correctly when deserializing.
      */
     public static class MinecraftVersionListAdapter implements JsonSerializer<MinecraftVersionList>, JsonDeserializer<MinecraftVersionList> {
+        /**
+         * Gson adapter factory for {@link MinecraftVersionList}.
+         */
         public static final TypeAdapterFactory FACTORY = TreeTypeAdapter.newTypeHierarchyFactory(MinecraftVersionList.class, new MinecraftVersionListAdapter());
 
         private static final TypeToken<Map<String, Integer>> MAP_STR_INT_TYPE = new TypeToken<>() { };

pandalib-core/src/main/java/fr/pandacube/lib/core/mc_version/ProtocolVersion.java

@@ -216,10 +216,18 @@ public class ProtocolVersion implements Comparable<ProtocolVersion> {
         return displayOptimizedListOfVersions(List.of(this), finalWordSeparator);
     }
 
+    /**
+     * Gets the first (earliest) Minecraft version that supports this protocol version.
+     * @return the first (earliest) Minecraft version that supports this protocol version.
+     */
     public String getFirstVersion() {
         return versions.get(0);
     }
 
+    /**
+     * Gets the last (latest) Minecraft version that supports this protocol version.
+     * @return the last (latest) Minecraft version that supports this protocol version.
+     */
     public String getLastVersion() {
         return versions.get(versions.size() - 1);
     }