code: def read_connections(self, connections):
          
          del self._items[:]
          for key in connections.get_key_names():
              item = DiscoveryItem()
              item.key = key
              value = connections.get_as_nullable_string(key)
              item.connection = ConnectionParams.from_string(value)
              self._items.append(item)
docs: Reads connections from configuration parameters.
          Each section represents an individual Connectionparams
  
          :param connections: configuration parameters to be read