code: function create_node_in_parent(error, parentDirectoryNode) {
      if(error) {
        callback(error);
      } else if(parentDirectoryNode.type !== NODE_TYPE_DIRECTORY) {
        callback(new Errors.ENOTDIR('a component of the path prefix is not a directory', path));
      } else {
        parentNode = parentDirectoryNode;
        find_node(context, path, check_if_node_exists);
      }
    }
docs: Check if the parent node exists