public function hideColumns($columnIds)
    {
        foreach ((array) $columnIds as $columnId) {
            $this->lazyHideShowColumns[$columnId] = false;
        }

        return $this;
    }
public function hideColumns($columnIds)
    {
        foreach ((array) $columnIds as $columnId) {
            $this->lazyHideShowColumns[$columnId] = false;
        }

        return $this;
    }
public function hideColumns ( $ columnIds ) { foreach ( ( array ) $ columnIds as $ columnId ) { $ this -> lazyHideShowColumns [ $ columnId ] = false ; } return $ this ; }
Sets off the visiblilty of columns.

@param string|array $columnIds

@return self
Sets off the visiblilty of columns .