code: @Override
    public void setRefid(final org.apache.tools.ant.types.Reference ref) {
      super.setRefid(ref);
    }
docs: Specifies that this element should behave as if the content of the
  element with the matching id attribute was inserted at this location. If
  specified, no other attributes or child content should be specified,
  other than "if", "unless" and "description".
  
  @param ref
  Reference to other element