interface RunRetrieveV2ParamsHeader param: application/json
Query param: project_id is the UUID of the tracing project that owns the run.
Query param: selects lists which properties to include on the returned run
(repeatable query parameter). Accepts any value of the RunSelectField enum. If
omitted, only id is returned.
Query param: start_time is the run's start_time (RFC3339 date-time).
Providing it speeds up retrieval.