public void associateWithPreviewFile(@NotNull VirtualFile editorConfigFile, @Nullable VirtualFile previewFile) {
    if (previewFile != null) {
      myPreviewMap.put(editorConfigFile.getPath(), previewFile.getPath());
    }
    else {
      myPreviewMap.remove(editorConfigFile.getPath());
    }
  }
public void associateWithPreviewFile(@NotNull VirtualFile editorConfigFile, @Nullable VirtualFile previewFile)