Convert the job description to init params that can be handled by the class constructor

        Args:
            job_details: the returned job details from a describe_training_job API call.
            model_channel_name (str): Name of the channel where pre-trained model data will be downloaded.

        Returns:
            dictionary: The transformed init_params

def _prepare_init_params_from_job_description(cls, job_details, model_channel_name=None):
        """Convert the job description to init params that can be handled by the class constructor

        Args:
            job_details: the returned job details from a describe_training_job API call.
            model_channel_name (str): Name of the channel where pre-trained model data will be downloaded.

        Returns:
            dictionary: The transformed init_params

        """
        init_params = super(MXNet, cls)._prepare_init_params_from_job_description(job_details, model_channel_name)
        image_name = init_params.pop('image')
        framework, py_version, tag, _ = framework_name_from_image(image_name)

        if not framework:
            # If we were unable to parse the framework name from the image it is not one of our
            # officially supported images, in this case just add the image to the init params.
            init_params['image_name'] = image_name
            return init_params

        init_params['py_version'] = py_version

        # We switched image tagging scheme from regular image version (e.g. '1.0') to more expressive
        # containing framework version, device type and python version (e.g. '0.12-gpu-py2').
        # For backward compatibility map deprecated image tag '1.0' to a '0.12' framework version
        # otherwise extract framework version from the tag itself.
        init_params['framework_version'] = '0.12' if tag == '1.0' else framework_version_from_tag(tag)

        training_job_name = init_params['base_job_name']

        if framework != cls.__framework_name__:
            raise ValueError("Training job: {} didn't use image for requested framework".format(training_job_name))

        return init_params