public static void createSourceRootIfNotExist(
      @NotNull final String path, @NotNull final Module module) {
    ApplicationManager.getApplication().assertIsDispatchThread();

    final File rootFile = new File(path);
    final boolean created;
    if (!rootFile.exists()) {
      if (!rootFile.mkdirs()) return;
      created = true;
    } else {
      created = false;
    }

    final Project project = module.getProject();
    Module genModule = module;

    final AndroidFacet facet = AndroidFacet.getInstance(genModule);

    if (facet != null && facet.getConfiguration().LIBRARY_PROJECT) {
      removeGenModule(module);
    }

    if (project.isDisposed() || genModule.isDisposed()) {
      return;
    }

    final VirtualFile root;
    if (created) {
      root = LocalFileSystem.getInstance().refreshAndFindFileByIoFile(rootFile);
    } else {
      root = LocalFileSystem.getInstance().findFileByIoFile(rootFile);
    }
    if (root != null) {
      final ModuleRootManager manager = ModuleRootManager.getInstance(genModule);
      unexcludeRootIfNeccessary(root, manager);
      for (VirtualFile existingRoot : manager.getSourceRoots()) {
        if (existingRoot == root) return;
      }
      ApplicationManager.getApplication()
          .runWriteAction(
              new Runnable() {
                public void run() {
                  addSourceRoot(manager, root);
                }
              });
    }
  }