/**
 * {@inheritdoc}
 */
public function vote(TokenInterface $token, $object, array $attributes)
{
    $result = VoterInterface::ACCESS_ABSTAIN;
    foreach ($attributes as $attribute) {
        if (!$this->supportsAttribute($attribute)) {
            continue;
        }

        $result = VoterInterface::ACCESS_DENIED;

        if (self::IS_AUTHENTICATED_FULLY === $attribute
            && $this->authenticationTrustResolver->isFullFledged($token)) {
            return VoterInterface::ACCESS_GRANTED;
        }

        if (self::IS_AUTHENTICATED_REMEMBERED === $attribute
            && ($this->authenticationTrustResolver->isRememberMe($token)
                || $this->authenticationTrustResolver->isFullFledged($token))) {
            return VoterInterface::ACCESS_GRANTED;
        }

        if (self::IS_AUTHENTICATED_ANONYMOUSLY === $attribute
            && ($this->authenticationTrustResolver->isAnonymous($token)
                || $this->authenticationTrustResolver->isRememberMe($token)
                || $this->authenticationTrustResolver->isFullFledged($token))) {
            return VoterInterface::ACCESS_GRANTED;
        }
    }

    return $result;
}

public function isAuthenticated()
{
    $securityContext = $this->container->get('security.context');
    return $securityContext->isGranted('IS_AUTHENTICATED_REMEMBERED');
}

if (isAuthenticated()) {
     throw $this->createNotFoundException('This page does not exist');
}

/**
 * {@inheritdoc}
 */
public function vote(TokenInterface $token, $object, array $attributes)
{
    $result = VoterInterface::ACCESS_ABSTAIN;
    foreach ($attributes as $attribute) {
        if (!$this->supportsAttribute($attribute)) {
            continue;
        }

        $result = VoterInterface::ACCESS_DENIED;

        if (self::IS_AUTHENTICATED_FULLY === $attribute
            && $this->authenticationTrustResolver->isFullFledged($token)) {
            return VoterInterface::ACCESS_GRANTED;
        }

        if (self::IS_AUTHENTICATED_REMEMBERED === $attribute
            && $this->authenticationTrustResolver->isRememberMe($token)) {
            return VoterInterface::ACCESS_GRANTED;
        }

        if (self::IS_AUTHENTICATED_ANONYMOUSLY === $attribute
            && $this->authenticationTrustResolver->isAnonymous($token)) {
            return VoterInterface::ACCESS_GRANTED;
        }
    }

    return $result;
}

pp_security.apikey_authenticated_voter:
    class: %pp_security.apikey_authenticated_voter.class%
    arguments:
        - "@security.authentication.trust_resolver"
    public:     false
    tags:
        - { name: security.voter }

security:
    access_decision_manager:
        strategy: unanimous