Protobuf3: How to describe map of repeated string?

Question

The Official documentation about map type says:

map map_field = N;

...where the key_type can be a

Answer 1

I think it should be as follows.

message ListOfString {
   repeated string what_ever_name = 1;
}

// Then define:
map what_ever_name = 1;

Remember what_ever_name should be same in both places.