/streamz help
Streamz Root:
Streamz ManuallySampledMetrics set:
Root name: <default> [(+) labels] [(+) collection] [(+) largest exported metrics]
Search:

Directory: /spanner/structuredsearch

Query matched 2 metrics and 0 "subdirectories":
/spanner/structuredsearch/division_write_fanout{string database, string index} (cumulative): Distribution = ...
/spanner/structuredsearch/division_write_fanout_overflow_count{string database, string index} (cumulative): long = ...