public static List<PsiMethod> getAllMethods(@NotNull LookupElement item) {
    List<SmartPsiElementPointer<PsiMethod>> pointers = item.getUserData(ALL_METHODS_ATTRIBUTE);
    if (pointers == null) return null;

    return ContainerUtil.mapNotNull(pointers, SmartPsiElementPointer::getElement);
  }
public static List<PsiMethod> getAllMethods(@NotNull LookupElement item)