Inheritance: extends Domain\Http\Requests\Request
 /**
  * Update or create Billet Assignor.
  *
  * @param  Request  $request
  * @return BilletAssignor
  */
 public function updateOrCreate(Request $request)
 {
     $assignor = $this->repo->first();
     if (is_null($assignor)) {
         $assignor = $this->repo->store($request->all());
     } else {
         $assignor = $this->repo->update($request->all(), $assignor->id);
     }
     if ($request->hasFile('logo') && !$request->file('logo')->move(public_path(), 'logo.jpg')) {
         return false;
     }
     return $assignor;
 }