SPIGOT-7011, SPIGOT-7065: Overhaul of structures

By: DerFrZocker <derrieple@gmail.com>

paper-api/src/main/java/org/bukkit/Server.java

@@ -1615,6 +1615,21 @@ public interface Server extends PluginMessageRecipient {
     @NotNull
     StructureManager getStructureManager();
 
+    /**
+     * Returns the registry for the given class.
+     * <br>
+     * If no registry is present for the given class null will be returned.
+     * <br>
+     * Depending on the implementation not every registry present in
+     * {@link Registry} will be returned by this method.
+     *
+     * @param tClass of the registry to get
+     * @param <T> type of the registry
+     * @return the corresponding registry or null if not present
+     */
+    @Nullable
+    <T extends Keyed> Registry<T> getRegistry(@NotNull Class<T> tClass);
+
     /**
      * @return the unsafe values instance
      * @see UnsafeValues