@NotNull
  private static String buildSignature(@NotNull PsiMethod method) {
    return PsiFormatUtil.formatMethod(method, PsiSubstitutor.EMPTY, PsiFormatUtil.SHOW_NAME | PsiFormatUtil.SHOW_PARAMETERS,
                                      PsiFormatUtil.SHOW_TYPE | PsiFormatUtil.SHOW_FQ_CLASS_NAMES | PsiFormatUtil.SHOW_RAW_TYPE);
  }
@NotNull
  private static String buildSignature(@NotNull PsiMethod method)