AuthBucket\OAuth2\TokenType\BearerTokenTypeHandler::createAccessToken PHP Method

    public function createAccessToken($clientId, $username = '', $scope = [], $state = null, $withRefreshToken = true)
    {
        $accessTokenManager = $this->modelManagerFactory->getModelManager('access_token');
        $class = $accessTokenManager->getClassName();
        $accessToken = new $class();
        $accessToken->setAccessToken(md5(openssl_random_pseudo_bytes(256)))->setTokenType('bearer')->setClientId($clientId)->setUsername($username)->setExpires(new \DateTime('+1 hours'))->setScope((array) $scope);
        $accessToken = $accessTokenManager->createModel($accessToken);
        $parameters = ['access_token' => $accessToken->getAccessToken(), 'token_type' => $accessToken->getTokenType(), 'expires_in' => $accessToken->getExpires()->getTimestamp() - time()];
        if (!empty($scope)) {
            $parameters['scope'] = implode(' ', (array) $scope);
        }
        if (!empty($state)) {
            $parameters['state'] = $state;
        }
        if ($withRefreshToken === true) {
            $refreshTokenManager = $this->modelManagerFactory->getModelManager('refresh_token');
            $class = $refreshTokenManager->getClassName();
            $refreshToken = new $class();
            $refreshToken->setRefreshToken(md5(openssl_random_pseudo_bytes(256)))->setClientId($clientId)->setUsername($username)->setExpires(new \DateTime('+1 days'))->setScope((array) $scope);
            $refreshToken = $refreshTokenManager->createModel($refreshToken);
            $parameters['refresh_token'] = $refreshToken->getRefreshToken();
        }
        return $parameters;
    }