code: protected String getFacetName() {
  
          Tag parent = getParent();
          if (parent instanceof FacetTag) {
              return (((FacetTag) parent).getName());
          } else {
              return (null);
          }
  
      }
docs: <p>Return the facet name that we should be stored under, if any;
  otherwise, return null (indicating that we will be a child component).
  </p>