1syntax = "proto2"; 2 3message Duration { 4 required int64 seconds = 1; 5 required int32 nanos = 2; 6} 7 8message Timestamp { 9 required int64 seconds = 1; 10 required int32 nanos = 2; 11} 12 13enum UserType { 14 GOOGLE = 0; 15 EXTERNAL = 1; 16} 17