code: protected void registerLabelAttributes() {
          addAttributeProcessor(new EllipsisLmlAttribute(), "ellipsis");
          addAttributeProcessor(new LabelAlignmentLmlAttribute(), "labelAlign", "labelAlignment");
          addAttributeProcessor(new LineAlignmentLmlAttribute(), "lineAlign", "lineAlignment");
          addAttributeProcessor(new TextAlignmentLmlAttribute(), "textAlign", "textAlignment");
          addAttributeProcessor(new WrapLmlAttribute(), "wrap");
      }
docs: Label widget attributes.