@NotNull
  public static GrSignature createSignature(@NotNull PsiMethod method,
                                            @NotNull PsiSubstitutor substitutor,
                                            boolean types,
                                            @NotNull PsiElement place) {
    return new GrMethodSignatureImpl(method, substitutor, types, place);
  }
@NotNull
  public static GrSignature createSignature(@NotNull PsiMethod method,
                                            @NotNull PsiSubstitutor substitutor,
                                            boolean types,
                                            @NotNull PsiElement place)