### Question:
ExclusionCookieConverter implements AttributeConverter<ExclusionCookie, Long> { @Override public Long toGraphProperty(ExclusionCookie value) { if (value == null) { return null; } return value.getValue(); }  @Override Long toGraphProperty(ExclusionCookie value); @Override ExclusionCookie toEntityAttribute(Long value); static final ExclusionCookieConverter INSTANCE; }### Answer:
@Test public void shouldConvertIdToLong() { ExclusionCookie cookie = new ExclusionCookie((long) 0x123); Long graphObject = new ExclusionCookieConverter().toGraphProperty(cookie); assertEquals(cookie.getValue(), (long) graphObject); }