mongoc_bulk_operation_set_comment - Man Page

void
mongoc_bulk_operation_set_comment (
   mongoc_bulk_operation_t *bulk, const bson_value_t *comment);

• bulk: A mongoc_bulk_operation_t <>​.
• comment: A bson_value_t <https://www.mongoc.org/libbson/current/bson_value_t.html> specifying the comment to associate with this bulk write.

Assigns a comment to attach to all commands executed as part of this bulk <>​. The comment will appear in log messages, profiler output, and currentOp output. Comments for write commands are only supported by MongoDB 4.4+.

It is prohibited to call this function after adding operations to the bulk <>​.

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