edition = "2023";

package a;

message Ten2 {
  repeated int64 one = 1;
  int64 two = 2 [features.field_presence = LEGACY_REQUIRED];
}

message Foo {
  extensions 10 to 100;

  message Bar {
    int32 len = 1;

    extend Foo {
      repeated string str = 10;
      repeated string labels = 11;
    }
  }
}

extend Foo {
  bytes meta = 20;
  uint64 tags = 21;
}
