code: public static int getPeriodicScanJobId(Context context) {
          if (sOverrideImmediateScanJobId >= 0) {
              LogManager.i(TAG, "Using PeriodicScanJobId from static override: "+
                      sOverridePeriodicScanJobId);
              return sOverridePeriodicScanJobId;
          }
          return getJobIdFromManifest(context, "periodicScanJobId");
      }
docs: Returns the job id to be used to schedule this job.  This may be set in the
  AndroidManifest.xml or in single process applications by using #setOverrideJobId
  @param context the application context
  @return the job id