code: def getparam(self, name, default=None, parents=False):
          '''A parameter in this :class:`.Router`
          '''
          value = getattr(self, name, None)
          if value is None:
              if parents and self._parent:
                  return self._parent.getparam(name, default, parents)
              else:
                  return default
          else:
              return valuf getparam(self, name, default=None, parents=False):
          '''A parameter in this :class:`.Router`
          '''
          value = getattr(self, name, None)
          if value is None:
              if parents and self._parent:
                  return self._parent.getparam(name, default, parents)
              else:
                  return default
          else:
              return value
docs: A parameter in this :class:`.Router`