void writeNameSpaceEnd(Writer w, String [] namespaceList) throws IOException {
        w.write("} // namespace ");
        w.write(getNestedNameSpace(namespaceList));
        w.write("\n");
    }
Class to generate noexcept specifier if default constructor, copy constructor or copy assignment is non-throwing
configgen/src/main/java/com/yahoo/config/codegen/CppClassBuilder.java