private static String privateLeafMapSetter(CNode n) {
            if ("String".equals(builderType(n)) || "FileReference".equals(builderType(n))) {
                return "";
            } else {
                return "\n\n" + //
                        "private Builder " + n.getName() + "(String " + INTERNAL_PREFIX + "key, String " + INTERNAL_PREFIX + "value) {\n" + //
                        "  return " + n.getName() + "(" + INTERNAL_PREFIX + "key, " + builderType(n) + ".valueOf(" + INTERNAL_PREFIX
                        + "value));\n" + //
                        "}";
            }
        }
\n" + //
                    " * Make a new builder and run the supplied function on it before using it as the value\n" + //
                    " * @param __func lambda that modifies the given builder\n" + //
                    " * @return this builder\n" + //
                    "
configgen/src/main/java/com/yahoo/config/codegen/BuilderGenerator.java