static @NotNull @NonNls String brokenStubFormat(@NotNull ObjectStubSerializer<?, ?> root) {
    return "Broken stub format, most likely version of " + root + " (" + root.getExternalId() + ") was not updated after serialization changes\n";
  }
static @NotNull @NonNls String brokenStubFormat(@NotNull ObjectStubSerializer<?, ?> root)