code: function parseSource (node, nodeType, feedType) {
    var source = {},
        sourceNode = node.source,
        temp;
  
    if (!sourceNode) {
      return;
    }
  
    if (temp = (feedType === 'atom' && utils.get(sourceNode.title)) || utils.get(sourceNode)) {
      source.title = temp;
    }
    if (temp = (feedType === 'atom' && utils.getAttr(sourceNode.link, 'href')) || utils.getAttr(sourceNode, 'url')) {
      source.url = temp;
    }
  
    return Object.keys(source).length && source;
  }
docs: Parse the source of an item node
  
  @param node
  @param nodeType
  @param feedType