docs: def find_one(self, address):
          '''
          Find the given address or prefix
          '''
          # Convert to a network and find all matches
          prefix = ip_network(address)
          matches = self.find_all(prefix)
  
          if not matches:
              # Nothing found
              return None
  
          if len(matches) > 1:
              # Found too much
              raise MoreSpecificsFoundError('Found more-specifics for %r' % prefix)
  
          # One match is what we want
          match = matches.pop()
  
          # The match should completely contain the prefix we look for
          if match.prefix[0] <= prefix[0] and match.prefix[-1] >= prefix[-1]:
              return match