@Override
    protected @Nullable LocalQuickFix buildFix(Object... infos) {
      final PsiMember member = (PsiMember)infos[0];
      final PsiClass usageClass = (PsiClass)infos[1];
      return new StaticMethodOnlyUsedInOneClassFix(usageClass, member instanceof PsiMethod);
    }
@Override
    protected @Nullable LocalQuickFix buildFix(Object... infos)