Maknz\Slack\Message::setUsername PHP Method

    public function setUsername($username)
    {
        $this->username = $username;
        return $this;
    }

 /**
  * Create a new message with defaults.
  *
  * @return \Maknz\Slack\Message
  */
 public function createMessage()
 {
     $message = new Message($this);
     $message->setChannel($this->getDefaultChannel());
     $message->setUsername($this->getDefaultUsername());
     $message->setIcon($this->getDefaultIcon());
     $message->setAllowMarkdown($this->getAllowMarkdown());
     $message->setMarkdownInAttachments($this->getMarkdownInAttachments());
     return $message;
 }