private @NotNull PsiFile findCopy(VirtualFile copyVFile, VirtualFile vFile) {
    PsiFile copyPsi = myManager.findFile(copyVFile);
    if (copyPsi == null) throw new IncorrectOperationException("Could not find file " + copyVFile + " after copying " + vFile);
    return copyPsi;
  }
private @NotNull PsiFile findCopy(VirtualFile copyVFile, VirtualFile vFile)