default void transportReportStatus(Status status) {
        transportReportStatus(status, null);
    }
A listener of gRPC {@link Status}s. Error or header events will be returned to gRPC business
logic through this listener. For clients the final response {@link Status} is also returned.
grpc/src/main/java/com/linecorp/armeria/internal/common/grpc/TransportStatusListener.java