if ( !ccPointer ) {
                    if ( timeToStartYielding.intervalHasElapsed() ) {
                        // Lazily construct a ClientCursor, avoiding a performance regression when scanning a very
                        // small number of documents.
                        ccPointer.reset( new ClientCursor( QueryOption_NoCursorTimeout, cursor, ns ) );
                    }
                }
                else if ( !ccPointer->yieldSometimes( simpleEqualityMatch ? ClientCursor::DontNeed : ClientCursor::MaybeCovered ) ||
                         !cursor->ok() ) {
                    break;
                }