DRIVERS-2761 : Summary Confirm that write/read concern are not applied to Atlas Search Index Helper commands. This is the previously expected behavior, but was previously untested. If write/read concern are applied, omit them to avoid errors from Atlas. References New specification tests and prose tests are added in: https://github.com/mongodb/specifications/commit/0b47194538aa817978fae0f77f684f6d5e62ebab An implementation of the tests and fix in the C++ driver are available here: https://github.com/mongodb/mongo-cxx-driver/pull/1055 with a test follow-up here: https://github.com/mongodb/mongo-cxx-driver/pull/1069