docs: def get_json(self):
          """Create JSON data for iSCSI initiator.
  
          :returns: JSON data for iSCSI initiator as follows:
  
              {
                  "DHCPUsage":{
                  },
                  "Name":{
                  },
                  "IPv4Address":{
                  },
                  "SubnetMask":{
                  },
                  "GatewayIPv4Address":{
                  },
                  "VLANId":{
                  }
              }
          """
          if self.dhcp_usage:
              return {'DHCPUsage': self.dhcp_usage,
                      'Name': self.iqn}
          else:
              return self.get_basic_json()