Getter property for the URL path to this Task.

        :rtype: string
        :returns: The URL path to this task.

def path(self):
        """Getter property for the URL path to this Task.

        :rtype: string
        :returns: The URL path to this task.
        """
        if not self.id:
            raise ValueError('Cannot determine path without a task id.')

        return self.path_helper(self.taskqueue.path, self.id)