replication_attr = 'replication_desired'
if api_client._schema.schemas['Collection']['properties'].get(replication_attr, None) is None:
# API called it 'redundancy' before #3410.
replication_attr = 'replication_desired'
if api_client._schema.schemas['Collection']['properties'].get(replication_attr, None) is None:
# API called it 'redundancy' before #3410.