How to achieve this on laravel 5 eloquent

How can i achieve something like this?

public function getInformation($model) {
  $result = $model::with(['province', 'city']);

  if($model == 'App\Models\Business') {
    $result->with(['businessProvince', 'businessCity']);
  }

  $result->get();
}

// call the function
$information->getInformation(\App\Models\Business::class);

i'm getting error

Object of class Illuminate\Database\Eloquent\Builder could not be converted to string

on the sample code above. Any suggestion is really appreciated.

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