@Override
  public List<PsiElement> findInheritors(PushDownData<MemberInfo, PsiMember> pushDownData) {
    final List<PsiElement> result = new ArrayList<>();
    final PsiClass aClass = (PsiClass)pushDownData.getSourceClass();
    ClassInheritorsSearch.search(aClass, false).forEach((iClass) -> {
      result.add(iClass);
      return true;
    });

    final PsiMethod interfaceMethod = LambdaUtil.getFunctionalInterfaceMethod(aClass);
    if (interfaceMethod != null) {
      for (MemberInfo info : pushDownData.getMembersToMove()) {
        if (interfaceMethod == info.getMember()) {
          FunctionalExpressionSearch.search(aClass).forEach(expression -> {
            result.add(expression);
            return true;
          });
          break;
        }
      }
    }
    return result;
  }
@Override
  public List<PsiElement> findInheritors(PushDownData<MemberInfo, PsiMember> pushDownData)