@NotNull
  private static LookupElement createFileLookupElement(@NotNull File file) {
    String name = file.getName();
    boolean isDirectory = file.isDirectory();
    return LookupElementBuilder.create(file, quote(name))
        .withIcon(isDirectory ? PlatformIcons.FOLDER_ICON : null)
        .withInsertHandler(FILE_INSERT_HANDLER);
  }
@NotNull
  private static LookupElement createFileLookupElement(@NotNull File file)