requestTag property
A per-request tag which can be applied to queries or reads, used for statistics collection.
Both request_tag and transaction_tag can be specified for a read or query
that belongs to a transaction. This field is ignored for requests where
it's not applicable (e.g. CommitRequest). Legal characters for
request_tag values are all printable characters (ASCII 32 - 126) and the
length of a request_tag is limited to 50 characters. Values that exceed
this limit are truncated. Any leading underscore (_) characters will be
removed from the string.
Implementation
core.String? requestTag;