/**
  * Set or get the morph map for polymorphic relations.
  *
  * @param array|null $map
  * @param bool $merge
  * @return array
  * @static
  */
 public static function morphMap($map = null, $merge = true)
 {
     //Method inherited from \Illuminate\Database\Eloquent\Relations\Relation
     return \Illuminate\Database\Eloquent\Relations\HasMany::morphMap($map, $merge);
 }