Returns an ENVI Py Engine Task object. See ENVI Py Engine Task for examples.

        :param task_name: The name of the task to retrieve.
        :return: An ENVI Py Engine Task object.

def task(self, task_name):
        """
        Returns an ENVI Py Engine Task object. See ENVI Py Engine Task for examples.

        :param task_name: The name of the task to retrieve.
        :return: An ENVI Py Engine Task object.
        """
        return Task(uri=':'.join((self._engine_name, task_name)), cwd=self._cwd)