text: // Built-in base types for API calls. Primarily useful as return types.
  
  syntax = "proto2";
  option go_package = "base";
  
  package appengine.base;
  
  message StringProto {
    required string value = 1;
  }
  
  message Integer32Proto {
    required int32 value = 1;
  }
  
  message Integer64Proto {
    required int64 value = 1;
  }
  
  message BoolProto {
    required bool value = 1;
  }
  
  message DoubleProto {
    required double value = 1;
  }
  
  message BytesProto {
    required bytes value = 1 [ctype=CORD];
  }
  
  message VoidProto {
  }
  