Client projection of a field with arguments does not return correct projection

In versions 6.x when you create a schema like this:

type Query {
    request: Response
}

type Foobar {
    foo(first: Int): String
}

type Response {
    bar: Foobar
}

Field foo(Integer first) returns FieldObjectProjection instead of FieldObjectProjection<PARENT, ROOT>.

public class FoobarProjection<PARENT extends BaseSubProjectionNode<?, ?>, ROOT extends BaseSubProjectionNode<?, ?>> extends BaseSubProjectionNode<PARENT, ROOT> {
  public FoobarProjection(PARENT parent, ROOT root) {
    super(parent, root, java.util.Optional.of("Foobar"));
  }

  public FoobarProjection<PARENT, ROOT> foo() {
    getFields().put("foo", null);
    return this;
  }

  public FoobarProjection foo(Integer first) {
    getFields().put("foo", null);
    getInputArguments().computeIfAbsent("foo", k -> new ArrayList<>());
    InputArgument firstArg = new InputArgument("first", first);
    getInputArguments().get("foo").add(firstArg);
    return this;
  }
}

Start with the schema and generated FoobarProjection shown in the issue, then trace the projection-generation path for fields that accept arguments. Reproduce the schema case and compare the parameterized foo method with the no-argument method. Done means the generated method preserves the PARENT and ROOT generic types and a regression test covers the argument-bearing field.