public function deletePolicy(Policy $policy)
    {
        $returnValue = $this->service->deletePolicy($policy);
        $this->signalDispatcher->emit(
            new RemovePolicySignal(
                array(
                    'roleId' => $policy->roleId,
                    'policyId' => $policy->id,
                )
            )
        );

        return $returnValue;
    }