def getfirst(self, key, default=None):
        values = self.getlist(key)
        return values[0] if values else default
Deletes all the contents from a given bucket and directory path.
dataset/ETHPy150Open uwdata/termite-data-server/web2py/gluon/storage.py/Storage.getfirst--crossover with--dataset/ETHPy150Open googlearchive/compute-appengine-demo-suite-python/demo-suite/lib/google_cloud/gcs_appengine.py/GcsAppEngineHelper.delete_bucket_contents