Build stuff into nodes! They may not do anything, but it's node-tastic!

src/main/java/net/minecraft/commands/builder/RequiredArgumentBuilder.java

@@ -1,6 +1,7 @@
 package net.minecraft.commands.builder;
 
 import net.minecraft.commands.arguments.CommandArgumentType;
+import net.minecraft.commands.tree.ArgumentCommandNode;
 
 public class RequiredArgumentBuilder extends ArgumentBuilder {
     private final String name;
@@ -14,4 +15,22 @@ public class RequiredArgumentBuilder extends ArgumentBuilder {
     public static RequiredArgumentBuilder argument(String name, CommandArgumentType type) {
         return new RequiredArgumentBuilder(name, type);
     }
+
+    public CommandArgumentType getType() {
+        return type;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public ArgumentCommandNode build() {
+        ArgumentCommandNode result = new ArgumentCommandNode(getName(), getType());
+
+        for (ArgumentBuilder argument : getArguments()) {
+            result.addChild(argument.build());
+        }
+
+        return result;
+    }
 }