private static @Nullable PsiExpression getQualifier (PsiElement element) {
    if (element instanceof PsiNewExpression) {
      PsiJavaCodeReferenceElement ref = ((PsiNewExpression) element).getClassReference();
      if (ref instanceof PsiReferenceExpression) {
        return ((PsiReferenceExpression) ref).getQualifierExpression();
      }
    } else if (element instanceof PsiReferenceExpression) {
      return ((PsiReferenceExpression) element).getQualifierExpression();
    } else if (element instanceof PsiMethodCallExpression) {
      return ((PsiMethodCallExpression) element).getMethodExpression().getQualifierExpression();
    }

    return null;
  }
private static @Nullable PsiExpression getQualifier (PsiElement element)