FractionField implements Field<Fraction>, Serializable { public static FractionField getInstance() { return LazyHolder.INSTANCE; } private  FractionField(); static FractionField getInstance(); Fraction getOne(); Fraction getZero(); Class<? extends FieldElement<Fraction>> getRuntimeClass();  }
@Test public void testSerial() { FractionField field = FractionField.getInstance(); Assert.assertTrue(field == TestUtils.serializeAndRecover(field)); }