code: public void setOperation(String operation) throws ApplicationException {
  	if (StringUtil.isEmpty(operation)) return;
  	operation = operation.toLowerCase().trim();
  	if (!operation.equals("httprequest")) throw new ApplicationException("attribute operation must have the value [HTTPRequest]");
      }
docs: set the value operation The type of operation the scheduler performs when executing this task.
  
  @param operation value to set
  @throws ApplicationException