public function group($group, $handle = null, $content = null)
    {
        $this->groups[$group][$handle] = $content;

        return $this;
    }
public function group($group, $handle = null, $content = null)
    {
        $this->groups[$group][$handle] = $content;

        return $this;
    }
public function group ( $ group , $ handle = null , $ content = null ) { $ this -> groups [ $ group ] [ $ handle ] = $ content ; return $ this ; }
Group wrapper.

@param string $group   Group name
@param string $handle  Asset name
@param string $content Asset content

@return $this
Group wrapper .