processChildNode = function processChildNode (child) {
        child.forEach(traversalPath[i], function (n) {
          if (n.content && typeof n.content !== 'string' && n.contains('interpolation')) {
            return false;
          }
          return nextNodeList.push(n);
        });
      }
Tries to traverse the AST, following a specified path
@param   {object}  node           Starting node
@param   {array}   traversalPath  Array of Node types to traverse, starting from the first element
@returns {array}                  Nodes at the end of the path. Empty array if the traversal failed