mongoc_bulk_operation_t * mongoc_collection_create_bulk_operation ( mongoc_collection_t *collection, bool ordered, const mongoc_write_concern_t *write_concern) BSON_GNUC_WARN_UNUSED_RESULT;
After calling mongoc_bulk_operation_execute() the commands will be executed in as large as batches as reasonable by the client.
If ordered is true, then processing will stop at the first error.
If ordered is not true, then the bulk operation will attempt to continue processing even after the first failure.
write_concern contains the write concern for all operations in the bulk operation. If NULL, the collection's write concern is used. The global default is acknowledged writes: MONGOC_WRITE_CONCERN_W_DEFAULT.
Errors are propagated when executing the bulk operation.