Wrapper for extra indent function for `property` node.

@param {Array} nodes all nodes
@param {Number} i position in nodes array
function extraIndentProperty(nodes, i) {
    var subset = [];
    while (i--) {
      if (!nodes.get(i) || nodes.get(i).is('declarationDelimiter'))
        break;
      subset.unshift(nodes.get(i));
    }
    return extraIndent(subset);
  }