code: def set_lb_listener_SSL_certificate(self, lb_name, lb_port,
                                          ssl_certificate_id):
          
          params = {
                      'LoadBalancerName'          :   lb_name,
                      'LoadBalancerPort'          :   lb_port,
                      'SSLCertificateId'          :   ssl_certificate_id,
                   }
          return self.get_status('SetLoadBalancerListenerSSLCertificate', params)
docs: Sets the certificate that terminates the specified listener's SSL
          connections. The specified certificate replaces any prior certificate
          that was used on the same LoadBalancer and port.