def list_objects(self, datastore_name=None):
        ds, datastore_name = self._get_datastore(datastore_name)
        view = ds.view(self._get_view_name("association", "by_doc"), include_docs=False, stale="false" )
        row_ids = [row['id'] for row in view]
        return row_ids
List all object types existing in the data store instance.
dataset/ETHPy150Open ooici/pyon/pyon/datastore/couchbase/base_store.py/CouchbaseDataStore.list_objects