fix(folia): check arguments for folia

Author: Jsinco

main/src/main/java/me/outspending/biomesapi/BiomeUpdater.java

@@ -1,5 +1,6 @@
 package me.outspending.biomesapi;
 
+import com.google.common.base.Preconditions;
 import me.outspending.biomesapi.annotations.AsOf;
 import me.outspending.biomesapi.misc.PointRange2D;
 import org.bukkit.Chunk;
@@ -26,6 +27,13 @@
 @AsOf("1.2.0")
 public interface BiomeUpdater {
 
+    /**
+     * Detects if the server is running Folia by checking for the presence 'io.papermc.paper.threadedregions.RegionizedServer'.
+     * @since 1.2.0
+     */
+    @AsOf("1.2.0")
+    boolean FOLIA = classExists("io.papermc.paper.threadedregions.RegionizedServer");
+
     /**
      * Returns an instance of BiomeUpdater.
      * This method returns an instance of BiomeUpdaterImpl.
@@ -37,6 +45,7 @@ public interface BiomeUpdater {
     @Deprecated
     @AsOf("1.2.0")
     static @NotNull BiomeUpdater of() {
+        Preconditions.checkArgument(!FOLIA, "Folia detected, please use BiomeUpdater#of(Plugin) instead.");
         return new BiomeUpdaterImpl(null);
     }
 
@@ -133,4 +142,13 @@ public interface BiomeUpdater {
     @AsOf("0.0.15")
     void updateChunksForPlayer(@NotNull Player player);
 
+
+    private static boolean classExists(String className) {
+        try {
+            Class.forName(className);
+            return true;
+        } catch (ClassNotFoundException e) {
+            return false;
+        }
+    }
 }

main/src/main/java/me/outspending/biomesapi/annotations/AsOf.java

@@ -30,7 +30,8 @@
         ElementType.TYPE,
         ElementType.CONSTRUCTOR,
         ElementType.MODULE,
-        ElementType.PACKAGE
+        ElementType.PACKAGE,
+        ElementType.FIELD
 })
 @AsOf("0.0.1")
 public @interface AsOf {