function payload()
    {
        if ( $this->Verb == 'GET' || $this->Verb == 'HEAD' || $this->Verb == 'TRACE' )
        {
            return '';
        }
        else
        {
            $params = $this->Parameters;
            if ( $this->NameVar != null )
            {
                $params[$this->NameVar] = $this->Name;
            }
            return $this->_payload( $params );
        }
    }