### Question:
IslStatusConverter implements AttributeConverter<IslStatus, String> { @Override public String toGraphProperty(IslStatus value) { if (value == null) { return null; } return value.name().toLowerCase(); }  @Override String toGraphProperty(IslStatus value); @Override IslStatus toEntityAttribute(String value); static final IslStatusConverter INSTANCE; }### Answer:
@Test public void shouldConvertToGraphProperty() { IslStatusConverter converter = IslStatusConverter.INSTANCE; assertEquals("active", converter.toGraphProperty(IslStatus.ACTIVE)); assertEquals("inactive", converter.toGraphProperty(IslStatus.INACTIVE)); }