Program: 34395
Project: 34395
Buggy source:
/** 
 * Gets diagnostic log for a device.	  <p> Refer to the <a href="https://docs.internetofthings.ibmcloud.com/swagger/v0002.html#!/Device_Diagnostics/delete_device_types_typeId_devices_deviceId_diag_logs_logId">link</a> for more information about the JSON Format</p>.
 * @param deviceType object of String which represents device Type
 * @param deviceId object of String which represents device id
 * @param logId object of String which represents log id
 * @return JsonObject the DiagnosticLog in JSON Format
 * @throws IOException Failure in retrieving the diagnostic log
 */
public JsonObject getDiagnosticLog(String deviceType,String deviceId,String logId) throws IoTFCReSTException {
  final String METHOD="String_Node_Str";
  StringBuilder sb=new StringBuilder("String_Node_Str");
  sb.append(orgId).append('.').append(BASIC_API_V0002_URL).append("String_Node_Str").append(deviceType).append("String_Node_Str").append(deviceId).append("String_Node_Str").append(logId);
  int code=0;
  HttpResponse response=null;
  try {
    response=connect("String_Node_Str",sb.toString(),null,null);
    code=response.getStatusLine().getStatusCode();
    if (code == 200) {
      String result=this.readContent(response,METHOD);
      JsonElement jsonResponse=new JsonParser().parse(result);
      return jsonResponse.getAsJsonObject();
    }
  }
 catch (  Exception e) {
    IoTFCReSTException ex=new IoTFCReSTException("String_Node_Str" + "String_Node_Str" + e.getMessage());
    ex.initCause(e);
    throw ex;
  }
  if (code == 404) {
    throw new IoTFCReSTException(code,"String_Node_Str");
  }
 else   if (code == 500) {
    throw new IoTFCReSTException(500,"String_Node_Str");
  }
  throwException(response,METHOD);
  return null;
}

Fixed version (ground truth):
/** 
 * Gets diagnostic log for a device.	  <p> Refer to the <a href="https://docs.internetofthings.ibmcloud.com/swagger/v0002.html#!/Device_Diagnostics/delete_device_types_typeId_devices_deviceId_diag_logs_logId">link</a> for more information about the JSON Format</p>.
 * @param deviceType object of String which represents device Type
 * @param deviceId object of String which represents device id
 * @param logId object of String which represents log id
 * @return JsonObject the DiagnosticLog in JSON Format
 * @throws IoTFCReSTException Failure in retrieving the diagnostic log
 */
public JsonObject getDiagnosticLog(String deviceType,String deviceId,String logId) throws IoTFCReSTException {
  final String METHOD="String_Node_Str";
  StringBuilder sb=new StringBuilder("String_Node_Str");
  sb.append(orgId).append('.').append(BASIC_API_V0002_URL).append("String_Node_Str").append(deviceType).append("String_Node_Str").append(deviceId).append("String_Node_Str").append(logId);
  int code=0;
  HttpResponse response=null;
  try {
    response=connect("String_Node_Str",sb.toString(),null,null);
    code=response.getStatusLine().getStatusCode();
    if (code == 200) {
      String result=this.readContent(response,METHOD);
      JsonElement jsonResponse=new JsonParser().parse(result);
      return jsonResponse.getAsJsonObject();
    }
  }
 catch (  Exception e) {
    IoTFCReSTException ex=new IoTFCReSTException("String_Node_Str" + "String_Node_Str" + e.getMessage());
    ex.initCause(e);
    throw ex;
  }
  if (code == 404) {
    throw new IoTFCReSTException(code,"String_Node_Str");
  }
 else   if (code == 500) {
    throw new IoTFCReSTException(500,"String_Node_Str");
  }
  throwException(response,METHOD);
  return null;
}