### Question:
ConfigDeployPropertiesForPnf { @Override public String toString() { final StringBuilder sb = new StringBuilder("{"); sb.append("\"service-instance-id\":").append("\"").append(serviceInstanceId).append("\""); sb.append(", \"pnf-id\":").append("\"").append(pnfId).append("\""); sb.append(", \"pnf-name\":").append("\"").append(pnfName).append("\""); sb.append(", \"pnf-ipv4-address\":").append("\"").append(pnfIpV4Address).append("\""); sb.append(", \"pnf-ipv6-address\":").append("\"").append(pnfIpV6Address).append("\""); sb.append(", \"service-model-uuid\":").append("\"").append(serviceModelUuid).append("\""); sb.append(", \"pnf-customization-uuid\":").append("\"").append(pnfCustomizationUuid).append("\""); sb.append('}'); return sb.toString(); }  String getServiceInstanceId(); void setServiceInstanceId(String serviceInstanceId); String getPnfId(); void setPnfId(String pnfId); String getPnfName(); void setPnfName(String pnfName); String getServiceModelUuid(); void setServiceModelUuid(String serviceModelUuid); String getPnfCustomizationUuid(); void setPnfCustomizationUuid(String pnfCustomizationUuid); String getPnfIpV4Address(); void setPnfIpV4Address(String pnfIpV4Address); String getPnfIpV6Address(); void setPnfIpV6Address(String pnfIpV6Address); @Override String toString();  }### Answer:
@Test public void testtoString() { final StringBuilder sb = new StringBuilder("{"); sb.append("\"service-instance-id\":").append("\"").append(TEST_SERVICE_INSTANCE_ID).append("\""); sb.append(", \"pnf-id\":").append("\"").append(TEST_PNF_ID).append("\""); sb.append(", \"pnf-name\":").append("\"").append(TEST_PNF_NAME).append("\""); sb.append(", \"pnf-ipv4-address\":").append("\"").append(TEST_PNF_IP_V4_ADDRESS).append("\""); sb.append(", \"pnf-ipv6-address\":").append("\"").append(TEST_PNF_IP_V6_ADDRESS).append("\""); sb.append(", \"service-model-uuid\":").append("\"").append(TEST_SERVICE_MODEL_UUID).append("\""); sb.append(", \"pnf-customization-uuid\":").append("\"").append(TEST_PNF_CUSTOMIZATION_UUID).append("\""); sb.append('}'); String Expexted = sb.toString(); assertEquals(Expexted, configDeployPropertiesForPnf.toString()); }