src/OpenPlatform/Api/BaseApi.php
public function getAuthorizerToken($appId, $refreshToken)
    {
        $params = [
            'component_appid' => $this->getAppId(),
            'authorizer_appid' => $appId,
            'authorizer_refresh_token' => $refreshToken,
        ];

        return $this->parseJSON('json', [self::GET_AUTHORIZER_TOKEN, $params]);
    }
public function getAuthorizerToken($appId, $refreshToken)
    {
        $params = [
            'component_appid' => $this->getAppId(),
            'authorizer_appid' => $appId,
            'authorizer_refresh_token' => $refreshToken,
        ];

        return $this->parseJSON('json', [self::GET_AUTHORIZER_TOKEN, $params]);
    }
Get authorizer token.

It doesn't cache the authorizer-access-token.
So developers should NEVER call this method.
It'll called by: AuthorizerAccessToken::renewAccessToken()

@param $appId
@param $refreshToken

@return \EasyWeChat\Support\Collection