bool mongoc_bulk_operation_remove_with_opts      (mongoc_bulk_operation_t       *bulk,
                                                  const bson_t                  *selector,
                                                  const bson_t                  *opts,
                                                  bson_error_t                  *error); /* OUT */
bool mongoc_bulk_operation_remove_one_with_opts  (mongoc_bulk_operation_t       *bulk,
                                                  const bson_t                  *selector,
                                                  const bson_t                  *opts,
                                                  bson_error_t                  *error); /* OUT */
bool mongoc_bulk_operation_replace_one_with_opts (mongoc_bulk_operation_t       *bulk,
                                                  const bson_t                  *selector,
                                                  const bson_t                  *document,
                                                  const bson_t                  *opts,
                                                  bson_error_t                  *error); /* OUT */
bool mongoc_bulk_operation_update_with_opts      (mongoc_bulk_operation_t       *bulk,
                                                  const bson_t                  *selector,
                                                  const bson_t                  *document,
                                                  const bson_t                  *opts,
                                                  bson_error_t                  *error); /* OUT */
bool mongoc_bulk_operation_update_one_with_opts  (mongoc_bulk_operation_t       *bulk,
                                                  const bson_t                  *selector,
                                                  const bson_t                  *document,
                                                  const bson_t                  *opts,
                                                  bson_error_t                  *error); /* OUT */

   opts = BCON_NEW ("upsert", BCON_BOOL (true));
   query = BCON_NEW ("_id", BCON_INT32 (4));
   doc = BCON_NEW ("$inc", "{", "j", BCON_INT32 (1), "}");
   mongoc_bulk_operation_update_with_opts (bulk, query, doc, opts);

{update: "collection", 
 updates: [{
    q: {_id: 4}, 
    u: {$inc: {j: 1}}, 
    upsert: true
}]}

   /* "One" normally sorts before "one"; make "one" come first */
   opts = BCON_NEW ("collation", "{",
                    "locale", BCON_UTF8 ("en_US"),
                    "caseFirst", BCON_UTF8 ("lower"),
                    "}");

   /* set x=1 on the document with _id "One", which now sorts after "one" */
   update = BCON_NEW ("$set", "{", "x", BCON_INT64 (1), "}");
   selector = BCON_NEW ("_id", "{", "$gt", BCON_UTF8 ("one"), "}");
   mongoc_bulk_operation_update_one_with_opts (bulk,
                                               selector,
                                               update,
                                               opts);

{update: "collection", 
 updates: [{
    q: {_id: "one"}, 
    u: {$set: {x: 1}}, 
    collation: {locale: "en_US", caseFirst: "lower"}
}]}