code: @Override
      public void appendTo( CssFormatter formatter ) {
          switch( getDataType( formatter ) ) {
              case STRING:
                  formatter.append( '\"' ).append( String.valueOf( result ) ).append( '\"' );
                  return;
              case LIST:
                  listValue( formatter ).appendTo( formatter );
                  return;
          }
          super.appendTo( formatter );
      }
docs: {@inheritDoc}