void

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                  MONGOC_BULK_OPERATION_SET_LET(3)

       Defines constants that can be accessed by all update, replace, and delete operations executed as part  of
       this bulk.

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

       • bulk: A mongoc_bulk_operation_t.

       • let:  A  BSON  document  consisting  of  any number of parameter names, each followed by definitions of
         constants in the MQL Aggregate Expression language.

          void
          mongoc_bulk_operation_set_let (
             mongoc_bulk_operation_t *bulk, const bson_t *let);