public function addItem(Model $item) : Collection
	{
		call_user_func([$this,$this->setterName()], $item);
		return $this;
	}
public function addItem(Model $item) : Collection
	{
		call_user_func([$this,$this->setterName()], $item);
		return $this;
	}
public function addItem ( Model $ item ) : Collection { call_user_func ( [ $ this , $ this -> setterName ( ) ] , $ item ) ; return $ this ; }
Add item to collection

@param Model $item

@return Collection
Add item to collection