code: function hasOutputPlaceholder(node) {
  		if (locateOutputPlaceholder(node.content).length)
  			return true;
  		
  		// check if attributes contains placeholder
  		return !!utils.find(node.attributeList(), function(attr) {
  			return !!locateOutputPlaceholder(attr.value).length;
  		});
  	}
docs: Check if parsed node contains output placeholder – a target where
  pasted content should be inserted
  @param {AbbreviationNode} node
  @returns {Boolean}