docs: @Override
      public void init(Collection<File> baseline) {
          // Baseline: we haven't found this file before.
          exists = monitoredFile.isFile();
          performScan(monitoredFile);
          // Always return the file being monitored as part of the
          // baseline so the caller can verify against information it may
          // have cached.
          if (exists) {
              addToList(baseline, monitoredFile);
          }
      }