/* tests data packing and unpacking */
struct msg {
string from_name = 1;
string to_name = 2;
optional struct[kill] attack = 3;
array struct[run] run = 4;
}
struct kill {
string weapon = 0x10121;
string action = 2;
optional int how_often = 3;
}
struct run {
string how = 1;
optional bytes some_bytes = 2;
bytes fixed_bytes[24] = 3;
}