Initial commit for a hotfix

Regards Paper 1.20.6, build 65+, they've merged the Brigadier command API and removed the vanillaCommandDispatcher field.

Author: DerEchtePilz

commandapi-platforms/commandapi-bukkit/commandapi-bukkit-nms/commandapi-bukkit-nms-common/src/main/java/dev/jorel/commandapi/nms/NMS_Common.java

@@ -28,6 +28,7 @@
 import com.mojang.brigadier.tree.CommandNode;
 import dev.jorel.commandapi.CommandAPIBukkit;
 import dev.jorel.commandapi.CommandAPIHandler;
+import dev.jorel.commandapi.SafeVarHandle;
 import dev.jorel.commandapi.arguments.ArgumentSubType;
 import dev.jorel.commandapi.arguments.SuggestionProviders;
 import dev.jorel.commandapi.commandsenders.AbstractCommandSender;
@@ -92,6 +93,12 @@
  */
 public abstract class NMS_Common extends CommandAPIBukkit<CommandSourceStack> {
 
+	private static final SafeVarHandle<MinecraftServer, CommandDispatcher> commandDispatcher;
+
+	static {
+		commandDispatcher = SafeVarHandle.ofOrNull(MinecraftServer.class, "vanillaCommandDispatcher", "vanillaCommandDispatcher", CommandDispatcher.class);
+	}
+
 	private static NamespacedKey fromResourceLocation(ResourceLocation key) {
 		return NamespacedKey.fromString(key.getNamespace() + ":" + key.getPath());
 	}
@@ -350,7 +357,12 @@ public abstract Predicate<Block> getBlockPredicate(CommandContext<CommandSourceS
 
 	@Override
 	public final CommandDispatcher<CommandSourceStack> getBrigadierDispatcher() {
-		return this.<MinecraftServer>getMinecraftServer().vanillaCommandDispatcher.getDispatcher();
+		if (commandDispatcher != null) {
+			return this.<MinecraftServer>getMinecraftServer().vanillaCommandDispatcher.getDispatcher();
+		} else {
+			// Hoping this actually acts as a hotfix and commands at least register with Paper 1.20.6 build 65
+			return getResourcesDispatcher();
+		}
 	}
 
 	@Override