private boolean compressableResponse(PayloadType responseType) {
        switch (responseType) {
            case COMPRESSABLE:
                return true;
            case RANDOM:
                return random.nextBoolean();
            case UNCOMPRESSABLE:
            default:
                return false;
        }
    }
Indicates whether or not the response for this type should be compressable. If {@code RANDOM},
picks a random boolean.
grpc/src/test/java/com/linecorp/armeria/internal/common/grpc/TestServiceImpl.java