optional_response_envelope<location_summary>
Packages a response whose data may be absent, with rate-limiting information.
- availableType: integerFormat: int32
_requests The number of requests the caller can make in the next minute before getting an HTTP 429 (Too Many Requests) response.
- dataType: nullableProperties: 5
The response itself, or null when no data is available.
- dataType: string | null
_type The data type/schema of the data.
