private PsiMethod addOrChangeAccessor(PsiMethod prototype, HashMap<String,PsiMethod> nameToAncestor) {
    PsiMethod existing = myClass.findMethodBySignature(prototype, false);
    PsiMethod result = existing;
    try{
      if (existing == null){
        PsiUtil.setModifierProperty(prototype, myDescriptor.getAccessorsVisibility(), true);
        result = (PsiMethod) myClass.add(prototype);
      }
      else{
        //TODO : change visibility
      }
      nameToAncestor.put(prototype.getName(), result);
      return result;
    }
    catch(IncorrectOperationException e){
      LOG.error(e);
    }
    return null;
  }
private PsiMethod addOrChangeAccessor(PsiMethod prototype, HashMap<String,PsiMethod> nameToAncestor)