/**
* Handle an incoming request.
*
* @param \Illuminate\Http\Request $request
* @param \Closure $next
* @param string|null $scopesString
*
* @throws \League\OAuth2\Server\Exception\InvalidScopeException
*
* @return mixed
*/
public function handle($request, Closure $next, $scopesString = null)
{
$scopes = [];
if (!is_null($scopesString)) {
$scopes = explode('+', $scopesString);
}
$this->authorizer->setRequest($request);
$this->authorizer->validateAccessToken($this->httpHeadersOnly);
$this->validateScopes($scopes);
return $next($request);
}