Parse into nested arguments

src/main/java/net/minecraft/commands/tree/ArgumentCommandNode.java

@@ -22,6 +22,23 @@ public class ArgumentCommandNode<T> extends CommandNode {
 
     @Override
     public void parse(String command) throws IllegalCommandArgumentException {
-        type.parse(command);
+        CommandArgumentType.CommandArgumentParseResult<T> parsed = type.parse(command);
+        int start = parsed.getRaw().length() + 1;
+
+        if (start < command.length()) {
+            String result = command.substring(start);
+            IllegalCommandArgumentException exception = new IllegalCommandArgumentException();
+
+            for (CommandNode node : getChildren()) {
+                try {
+                    node.parse(result);
+                    return;
+                } catch (IllegalCommandArgumentException ex) {
+                    exception = ex;
+                }
+            }
+
+            throw exception;
+        }
     }
 }