Protocol Buffers Company Example

spec.proto

syntax = 'proto2';

package example;

enum CompanyType {
  Private = 17;
  Public = 18;
  NonProfit = 19;
};

message Company {
  required string Name = 1;
  repeated Employee Employees = 2;
  required CompanyType Type = 3;
  optional group Address = 4 {
    required string Country = 5;
    required string City = 6;
    optional string Street = 7;
  }
}

message Employee {
  required string Name = 1;
  optional string SSN = 2;
}