@Override
            public PolicyFailure createFailure(PolicyFailureType type, int failureCode, String message) {
                return failure;
            }
Test method for {@link io.apiman.gateway.engine.policies.IPBlacklistPolicy#parseConfiguration(java.lang.String)}.
gateway/engine/policies/src/test/java/io/apiman/gateway/engine/policies/IPBlacklistPolicyTest.java