Augmenting PSI with references

Hello

It's probably simple question but I have trouble understanding where to start. I'm implementing support if the internal framework and need to augment PSI with references. I need the parameter of the annotation @Ann to be a reference to methodA to provide navigation, renaming, etc... PsiAugmentProvider doesn't work with references. Where should I look to do so? 

claas A {
  @Ann("methodA") 
  void methodB() {
  }
  void methodA() {
  }
}