code: def filter(self, btype='', name=''):
          
          filtered = []
          for x in self.children:
              if name and isinstance(x, Key) and x.name == name:
                  filtered.append(x)
              elif isinstance(x, Container) and x.__class__.__name__ == btype\
                      and x.value == name:
                  filtered.append(x)
              elif not name and btype and x.__class__.__name__ == btype:
                  filtered.append(x)
          return filtered
docs: Return child object(s) of this Conf that satisfy certain criteria.
  
          :param str btype: Type of object to filter by (e.g. 'Key')
          :param str name: Name of key OR container value to filter by
          :returns: full list of matching child objects