code: function findUrlToken(node, pos) {
  	for (let i = 0, il = node.parsedValue.length, url; i < il; i++) {
  		iterateCSSToken(node.parsedValue[i], token => {
  			if (token.type === 'url' && containsPoint(token, pos)) {
  				url = token;
  				return false;
  			}
  		});
  
  		if (url) {
  			return url;
  		}
  	}
  }
docs: Finds 'url' token for given `pos` point in given CSS property `node`
  @param  {Node}  node
  @param  {Point} pos
  @return {Token}