code: protected void popIgnoreNullabilityPragmas() {
      if (getGenerationUnit().options().nullability()
          || getGenerationUnit().hasNullabilityAnnotations()) {
        newline();
        println("#if __has_feature(nullability)");
        println("#pragma clang diagnostic pop");
        println("#endif");
      }
    }
docs: Restores warnings after a call to pushIgnoreNullabilityPragmas.