Inheritance: extends illuminate\database\eloquent\Model
 /**
  * Remove the specified resource from storage.
  *
  * @param  int  $acProjectId
  * @param  int  $id
  * @return Response
  */
 public function destroy($acProjectId, $id)
 {
     // $this->acTaskModel->find($id)->delete();
     $this->acTask->delete();
     return redirect()->route('ac_projects.ac_tasks.index', $acProjectId);
 }