@Nullable
  public static UInjectionHost getEnclosingStringLiteral(final PsiFile psiFile, final Editor editor) {
    PsiElement psiElement = psiFile.findElementAt(editor.getCaretModel().getOffset());
    return getEnclosingStringLiteral(psiElement);
  }
@Nullable
  public static UInjectionHost getEnclosingStringLiteral(final PsiFile psiFile, final Editor editor)