public function addFilter(FilterConfig $filter)
    {
        $this->getFilters()->push($filter);
        $filter->attach($this);
        return $this;
    }
public function addFilter(FilterConfig $filter)
    {
        $this->getFilters()->push($filter);
        $filter->attach($this);
        return $this;
    }
public function addFilter ( FilterConfig $ filter ) { $ this -> getFilters ( ) -> push ( $ filter ) ; $ filter -> attach ( $ this ) ; return $ this ; }
Allows to add filtering control to column.

@param FilterConfig $filter
@return $this
Allows to add filtering control to column .