### Question:
PropertyNames { static String decapitalizeNormally(String propertyName) { if (Strings.isNullOrEmpty(propertyName)) { return propertyName; } return Character.toLowerCase(propertyName.charAt(0)) + propertyName.substring(1); }    }### Answer:
@Test public void decapitalizeNormally() { NORMAL_CASES .forEach( (input, output) -> { expect.that(PropertyNames.decapitalizeNormally(input)).isEqualTo(output); }); expect.that(PropertyNames.decapitalizeNormally(null)).isNull(); expect.that(PropertyNames.decapitalizeNormally("HTMLPage")).isEqualTo("hTMLPage"); expect.that(PropertyNames.decapitalizeNormally("OAuth")).isEqualTo("oAuth"); }