Factory:  construct a job given its API representation

        :type resource: dict
        :param resource: dataset job representation returned from the API

        :type client: :class:`google.cloud.bigquery.client.Client`
        :param client: Client which holds credentials and project
                       configuration for the dataset.

        :rtype: :class:`google.cloud.bigquery.job.QueryJob`
        :returns: Job parsed from ``resource``.

def from_api_repr(cls, resource, client):
        """Factory:  construct a job given its API representation

        :type resource: dict
        :param resource: dataset job representation returned from the API

        :type client: :class:`google.cloud.bigquery.client.Client`
        :param client: Client which holds credentials and project
                       configuration for the dataset.

        :rtype: :class:`google.cloud.bigquery.job.QueryJob`
        :returns: Job parsed from ``resource``.
        """
        job_id, config = cls._get_resource_config(resource)
        query = config["query"]["query"]
        job = cls(job_id, query, client=client)
        job._set_properties(resource)
        return job