public static @Nullable JavaClassReference findJavaClassReference(final PsiFile file, final int offset) {
    PsiReference reference = file.findReferenceAt(offset);
    if (reference instanceof PsiMultiReference) {
      for (final PsiReference psiReference : ((PsiMultiReference)reference).getReferences()) {
        if (psiReference instanceof JavaClassReference) {
          return (JavaClassReference)psiReference;
        }
      }
    }
    return reference instanceof JavaClassReference ? (JavaClassReference)reference : null;
  }
public static @Nullable JavaClassReference findJavaClassReference(final PsiFile file, final int offset)