public function byGroup($group)
    {
        $filtered_messages = $this->filterMessage('group', $group);

        $this->filtered = $filtered_messages;

        return $this;
    }
public function byGroup($group)
    {
        $filtered_messages = $this->filterMessage('group', $group);

        $this->filtered = $filtered_messages;

        return $this;
    }
public function byGroup ( $ group ) { $ filtered_messages = $ this -> filterMessage ( 'group' , $ group ) ; $ this -> filtered = $ filtered_messages ; return $ this ; }
Filter messages by group.

@param string $group

@return $this
Filter messages by group .