private @Nullable String getShortName() {
    PsiAnnotationStub stub = getStub();
    if (stub != null) {
      return getAnnotationShortName(stub.getText());
    }

    PsiJavaCodeReferenceElement nameRef = getNameReferenceElement();
    return nameRef == null ? null : nameRef.getReferenceName();
  }
private @Nullable String getShortName()