### Question:
FlowEncapsulationTypeConverter implements AttributeConverter<FlowEncapsulationType, String> { @Override public String toGraphProperty(FlowEncapsulationType value) { if (value == null) { return null; } return value.name(); }  @Override String toGraphProperty(FlowEncapsulationType value); @Override FlowEncapsulationType toEntityAttribute(String value); static final FlowEncapsulationTypeConverter INSTANCE; }### Answer:
@Test public void shouldConvertToGraphProperty() { assertEquals("TRANSIT_VLAN", FlowEncapsulationTypeConverter.INSTANCE.toGraphProperty(FlowEncapsulationType.TRANSIT_VLAN)); }