code: def add_snmp_host(self, **kwargs):
          
          host_info = kwargs.pop('host_info')
          community = kwargs.pop('community')
          callback = kwargs.pop('callback', self._callback)
  
          config = ET.Element('config')
          snmp_server = ET.SubElement(config, 'snmp-server',
                                      xmlns=("urn:brocade.com:mgmt:"
                                             "brocade-snmp"))
          host = ET.SubElement(snmp_server, 'host')
          ip_addr = ET.SubElement(host, 'ip')
          ip_addr.text = host_info[0]
          com = ET.SubElement(host, 'community')
          com.text = community
          udp_port = ET.SubElement(host, 'udp-port')
          udp_port.text = host_info[1]
          return callback(config)
docs: Add SNMP host to NOS device.
  
          Args:
              host_info (tuple(str, str)): Tuple of host IP and port.
              community (str): Community string to be added to device.
              callback (function): A function executed upon completion of the
                  method.  The only parameter passed to `callback` will be the
                  ``ElementTree`` `config`.
  
          Returns:
              Return value of `callback`.
  
          Raises:
              KeyError: if `host_info` or `community` is not defined.