### Question:
SecRuleEntityDecoder { public static ClassifierRef getClassifierRef(SecurityRule secRule) { checkNotNull(secRule); ClassifierName classifierInstanceName = SecRuleNameDecoder.getClassifierInstanceName(secRule); ClassifierRefBuilder classifierRefBuilder = new ClassifierRefBuilder() .setConnectionTracking(ConnectionTracking.Reflexive).setInstanceName(classifierInstanceName); Direction direction = getDirection(secRule); classifierRefBuilder.setDirection(direction); ClassifierName classifierRefName = SecRuleNameDecoder.getClassifierRefName(secRule); return classifierRefBuilder.setName(classifierRefName).build(); } private  SecRuleEntityDecoder(); static ContractId getContractId(SecurityRule secRule); static ClassifierInstance getClassifierInstance(SecurityRule secRule); static ActionRef createActionRefFromActionChoice(ActionChoice action); static ClassifierRef getClassifierRef(SecurityRule secRule); static Direction getDirection(SecurityRule secRule); static Clause getClause(SecurityRule secRule); static boolean isEtherTypeOfOneWithinTwo(SecurityRule one, SecurityRule two); static boolean isProtocolOfOneWithinTwo(SecurityRule one, SecurityRule two); static boolean isPortsOfOneWithinTwo(SecurityRule one, SecurityRule two); static Long getEtherType(SecurityRule secRule); static Long getProtocol(SecurityRule secRule);  }### Answer:
@Test public final void testGetClassifierRef() { secRuleBuilder.setDirection(DirectionIngress.class); secRuleBuilder.setEthertype(EthertypeV4.class); ClassifierName expectedName = SecRuleNameDecoder.getClassifierRefName(secRuleBuilder.build()); ClassifierRef cr = SecRuleEntityDecoder.getClassifierRef(secRuleBuilder.build()); Assert.assertEquals(expectedName, cr.getName()); }