Function serialize

example/generic-client.cpp:33–39

template <class Message>
auto serialize(const Message& message)
{
    grpc::ByteBuffer buffer;
    bool own_buffer;
    grpc::GenericSerialize<grpc::ProtoBufferWriter, example::v1::Request>(message, &buffer, &own_buffer);
    return buffer;
}

template <class Message>
bool deserialize(grpc::ByteBuffer& buffer, Message& message)