code: def register_job_definition(self, json_fpath):
          
          with open(json_fpath) as f:
              job_def = json.load(f)
          response = self._client.register_job_definition(**job_def)
          status_code = response['ResponseMetadata']['HTTPStatusCode']
          if status_code != 200:
              msg = 'Register job definition request received status code {0}:\n{1}'
              raise Exception(msg.format(status_code, response))
          return response
docs: Register a job definition with AWS Batch, using a JSON