public @Nullable VirtualFile getAssociatedPreviewFile(@NotNull VirtualFile editorConfigFile) {
    final String editorConfigFilePath = editorConfigFile.getPath();
    String previewPathStr = myPreviewMap.get(editorConfigFilePath);
    if (previewPathStr != null) {
      Path previewPath = Paths.get(previewPathStr);
      VirtualFile actualFile = VfsUtil.findFile(previewPath, true);
      if (actualFile == null) {
        myPreviewMap.remove(editorConfigFilePath);
      }
      return actualFile;
    }
    return null;
  }
public @Nullable VirtualFile getAssociatedPreviewFile(@NotNull VirtualFile editorConfigFile)