public static PsiFile[] getPsiFiles(final Project project, final Collection<? extends VirtualFile> selectedFiles) {
    ArrayList<PsiFile> result = new ArrayList<>();
    PsiManager psiManager = PsiManager.getInstance(project);

    IProjectStore projectStore = ProjectKt.getStateStore(project);
    for (VirtualFile file : selectedFiles) {
      if (file.isValid()) {
        if (projectStore.isProjectFile(file) || !isFileUnderSourceRoot(project, file)
            || isOutOfSources(project, file)) {
          continue;
        }
        PsiFile psiFile = psiManager.findFile(file);
        if (psiFile != null) result.add(psiFile);
      }
    }
    return PsiUtilCore.toPsiFileArray(result);
  }
public static PsiFile[] getPsiFiles(final Project project, final Collection<? extends VirtualFile> selectedFiles)