public function mute(bool $mute = true): SpeakerInterface
    {
        $this->speaker->mute($mute);
        return $this;
    }
public function mute(bool $mute = true): SpeakerInterface
    {
        $this->speaker->mute($mute);
        return $this;
    }
public function mute ( bool $ mute = true ) : SpeakerInterface { $ this -> speaker -> mute ( $ mute ) ; return $ this ; }
Mute this speaker.

@param bool $mute Whether the speaker should be muted or not

@return $this
Mute this speaker .