Hi,

I'm new to protobuf and I'm trying to create a simple CRUD app with grpc my 
proto file is :

service AcceptorService {  
  rpc create (Acceptor) returns (Acceptor) {};
  rpc update (Acceptor) returns (Acceptor) {};
  rpc list(Pagination) returns (AcceptorList) {};  
  rpc count(Pagination) returns (AcceptorCount) {};  
}



message Acceptor {
  string name = 1;
  string acceptorCode = 3;
}

message AcceptorList {
    repeated Acceptor acceptors=100;    
}

message AcceptorCount {
    int64 count = 1;
}

message Pagination{
int32 page = 1;
int32 pageSize = 2;
}



What I want to achieve is not to use message as return type for example I 
want to change count rpc as follow : 

service AcceptorService {   
  rpc count(int32 page, int32 pageSize) returns (int32 count) {};  
}

is it possible ? because I get this error proto:15:34: Expected message 
type.

PS: I'm using proto3

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