<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def launch(self, image, command, **kwargs):
 """ Create a job on this engine Args: image (str):
 name of the docker image to launch command (str):
 shell command to run """

        if isinstance(command, PythonCall):
            return PythonJob(self, image, command, **kwargs)
        else:
            return Job(self, image, command, **kwargs)