'Commit a transaction, optionally creating, deleting or modifying some entities.
see https://cloud.google.com/datastore/docs/apis/v1beta2/datasets/commit
:param body: the body of the commit request
:return: the response body of the commit request'

def commit(self, body):

    resp = self.connection.datasets().commit(datasetId=self.dataset_id, body=body).execute()
    return resp
