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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def submit(self, workflow_uuid='', experiment='', image='', cmd='', prettified_cmd='', workflow_workspace='', job_name='', cvmfs_mounts='false'):
 """Submit a job to RJC API. :param name: Name of the job. :param experiment: Experiment the job belongs to. :param image: Identifier of the Docker image which will run the job. :param cmd: String which represents the command to execute. It can be modified by the workflow engine i.e. prepending ``cd /some/dir/``. :prettified_cmd: Original command submitted by the user. :workflow_workspace: Path to the workspace of the workflow. :cvmfs_mounts: String with CVMFS volumes to mount in job pods. :return: Returns a dict with the ``job_id``. """

        job_spec = {
            'experiment': experiment,
            'docker_img': image,
            'cmd': cmd,
            'prettified_cmd': prettified_cmd,
            'env_vars': {},
            'workflow_workspace': workflow_workspace,
            'job_name': job_name,
            'cvmfs_mounts': cvmfs_mounts,
            'workflow_uuid': workflow_uuid
        }

        response, http_response = self._client.jobs.create_job(job=job_spec).\
            result()
        if http_response.status_code == 400:
            raise HTTPBadRequest('Bad request to create a job. Error: {}'.
                                 format(http_response.data))
        elif http_response.status_code == 500:
            raise HTTPInternalServerError('Internal Server Error. Error: {}'.
                                          format(http_response.data))
        return response