### Question:
ConfigDeployPropertiesForVnf { @Override public String toString() { final StringBuilder sb = new StringBuilder("{"); sb.append("\"service-instance-id\":").append("\"").append(serviceInstanceId).append("\""); sb.append(", \"vnf-id\":").append("\"").append(vnfId).append("\""); sb.append(", \"vnf-name\":").append("\"").append(vnfName).append("\""); sb.append(", \"service-model-uuid\":").append("\"").append(serviceModelUuid).append("\""); sb.append(", \"vnf-customization-uuid\":").append("\"").append(vnfCustomizationUuid).append("\""); sb.append('}'); return sb.toString(); }  String getServiceInstanceId(); void setServiceInstanceId(String serviceInstanceId); String getVnfId(); void setVnfId(String vnfId); String getVnfName(); void setVnfName(String vnfName); String getServiceModelUuid(); void setServiceModelUuid(String serviceModelUuid); String getVnfCustomizationUuid(); void setVnfCustomizationUuid(String vnfCustomizationUuid); @Override String toString();  }### Answer:
@Test public void testtoString() { final StringBuilder sb = new StringBuilder("{"); sb.append("\"service-instance-id\":").append("\"").append(serviceInstanceId).append("\""); sb.append(", \"vnf-id\":").append("\"").append(vnfId).append("\""); sb.append(", \"vnf-name\":").append("\"").append(vnfName).append("\""); sb.append(", \"service-model-uuid\":").append("\"").append(serviceModelUuid).append("\""); sb.append(", \"vnf-customization-uuid\":").append("\"").append(vnfCustomizationUuid).append("\""); sb.append('}'); String Expexted = sb.toString(); assertEquals(Expexted, configDeployPropertiesForVnf.toString()); }