Pop\Mail\Message::setCharset PHP Method

    public function setCharset($chr)
    {
        $this->charset = $chr;
        return $this;
    }

 /**
  * Set character set
  *
  * @param  string $chr
  * @return \Pop\Mail\Mail
  */
 public function setCharset($chr)
 {
     $this->message->setCharset($chr);
     return $this;
 }