public function isMime()
    {
        $contentType = $this->getHeaderValue('Content-Type');
        $mimeVersion = $this->getHeaderValue('Mime-Version');
        return ($contentType !== null || $mimeVersion !== null);
    }
public function isMime()
    {
        $contentType = $this->getHeaderValue('Content-Type');
        $mimeVersion = $this->getHeaderValue('Mime-Version');
        return ($contentType !== null || $mimeVersion !== null);
    }
public function isMime ( ) { $ contentType = $ this -> getHeaderValue ( 'Content-Type' ) ; $ mimeVersion = $ this -> getHeaderValue ( 'Mime-Version' ) ; return ( $ contentType !== null || $ mimeVersion !== null ) ; }
Returns true if either a Content-Type or Mime-Version header are defined
in this Message.

@return bool
Returns true if either a Content - Type or Mime - Version header are defined in this Message .