Illuminate\Database\Eloquent\Model::getQualifiedKeyName PHP Method

    public function getQualifiedKeyName()
    {
        return $this->getTable() . '.' . $this->getKeyName();
    }

 /**
  * Find a model by its primary key.
  *
  * @param  array  $id
  * @param  array  $columns
  * @return \Illuminate\Database\Eloquent\Model|Collection|static
  */
 public function findMany($id, $columns = array('*'))
 {
     if (empty($id)) {
         return $this->model->newCollection();
     }
     $this->query->whereIn($this->model->getQualifiedKeyName(), $id);
     return $this->get($columns);
 }