code: @Override
      protected FaxJobStatus getFaxJobStatusImpl(FaxJob faxJob)
      {
          //create command
          String command=this.createGetStatusFaxJobProcessCommand(faxJob);
  
          FaxJobStatus faxJobStatus=FaxJobStatus.UNKNOWN;
          if(command!=null)
          {
              //execute command
              ProcessOutput processOutput=this.executeProcess(faxJob,command,FaxActionType.GET_FAX_JOB_STATUS);
              
              //get fax job status
              faxJobStatus=this.getFaxJobStatus(processOutput);
          }
  
          return faxJobStatus;
      }
docs: This function returns the fax job status.<br>
  Not all SPIs support extraction of the fax job status.<br>
  In case the SPI is unable to extract or does not support extracting
  of the fax job status, it will return the UNKNOWN status.
  
  @param   faxJob
  The fax job object containing the needed information
  @return  The fax job status