Mark Raid.WaveMembers as an extensible enum. (#6878)

src/test/java/net/minecraftforge/debug/world/RaidEnumTest.java

@@ -0,0 +1,17 @@
+package net.minecraftforge.debug.world;
+
+import net.minecraft.entity.EntityType;
+import net.minecraft.world.raid.Raid;
+import net.minecraftforge.fml.common.Mod;
+
+@Mod("raid_enum_test")
+public class RaidEnumTest 
+{
+    private static final boolean ENABLE = false;
+	
+    public RaidEnumTest()
+    {
+        if (ENABLE)
+            Raid.WaveMember.create("thebluemengroup", EntityType.ILLUSIONER, new int[]{0, 5, 0, 1, 0, 1, 0, 2});
+    }
+}