code: def get_nic(self, datacenter_id, server_id, nic_id, depth=1):
          
          response = self._perform_request(
              '/datacenters/%s/servers/%s/nics/%s?depth=%s' % (
                  datacenter_id,
                  server_id,
                  nic_id,
                  str(depth)))
  
          return response
docs: Retrieves a NIC by its ID.
  
          :param      datacenter_id: The unique ID of the data center.
          :type       datacenter_id: ``str``
  
          :param      server_id: The unique ID of the server.
          :type       server_id: ``str``
  
          :param      nic_id: The unique ID of the NIC.
          :type       nic_id: ``str``
  
          :param      depth: The depth of the response data.
          :type       depth: ``int``