protected @NotNull AbstractQualifiedReference shortenReferences() {
    final PsiElement refElement = resolve();
    if (refElement instanceof PsiClass) {
      final PsiQualifiedReference reference = JavaReferenceAdjuster.getClassReferenceToShorten((PsiClass)refElement, false, this);
      if (reference instanceof AbstractQualifiedReference) {
        ((AbstractQualifiedReference<?>)reference).dequalify();
      }
    }
    return this;
  }
protected @NotNull AbstractQualifiedReference shortenReferences()