code: def get(self):
          
          config = self.config
          if not config:
              return None
  
          response = dict()
          response.update(self._parse_source_interface(config))
          response.update(self._parse_servers(config))
  
          return response
docs: Returns the current NTP configuration
  
          The Ntp resource returns the following:
  
              * source_interface (str): The interface port that specifies
                                        NTP server
              * servers (list): A list of the NTP servers that have been
                                assigned to the node. Each entry in the
                                list is a key/value pair of the name of
                                the server as the key and None or 'prefer'
                                as the value if the server is preferred.
  
          Returns:
              A Python dictionary object of key/value pairs that represents
              the current NTP configuration of the node::
  
                  {
                      "source_interface": 'Loopback0',
                      'servers': [
                          { '1.1.1.1': None },
                          { '1.1.1.2': 'prefer' },
                          { '1.1.1.3': 'prefer' },
                          { '1.1.1.4': None },
                      ]
                  }