private void scanSourceFile(File file, final Set<? super String> usedPackages) {
    @NlsSafe final String name = file.getName();
    myProgress.setText2(name);
    try {
      String chars = FileUtil.loadFile(file, (String)null);
      scanSourceFileForImportedPackages(chars, s -> usedPackages.add(myInterner.intern(s)));
    }
    catch (IOException e) {
      LOG.info(e);
    }
  }
private void scanSourceFile(File file, final Set<? super String> usedPackages)