Macros can be used with invokable classes, like so.
```
<?php
namespace App\Providers;
use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Facades\Response;
class ResponseMacroServiceProvider extends ServiceProvider
{
public function boot()
{
Response::macro('foo', new Foo());
}
}
class Foo
{
public function __invoke()
{
return 'foobar';
}
}
```
When running `ide-helper:generate` the following fatal error was thrown.
``` Symfony\Component\Debug\Exception\FatalThrowableError : ReflectionFunction::__construct() expects parameter 1 to be string, object given```
This commit fixes this error.
