GoZeroPlus/tools/goctl/rpc/generator/test_service_rpc_naming_snake.proto

// test proto
syntax = "proto3";

package snake_package;

message StreamReq {
  string name = 1;
}

message Stream_Resp {
  string greet = 1;
}

message lowercase {
  string in = 1;
  string lower = 2;
}

message CamelCase {
  string Camel = 1;
}

service Stream_Greeter {
  rpc snake_service(StreamReq) returns (Stream_Resp);
  rpc ServiceCamelCase(CamelCase) returns (CamelCase);
  rpc servicelowercase(lowercase) returns (lowercase);
}