How to use the anypytools.h5py_wrapper.Group function in anypytools

if 'RefTarget' in elem.attrs:
                    elem = _follow_reftarget(elem)
        except KeyError:
            elem = super(type(self), self)
            levels = path.strip('/').split('/')
            for level in levels:
                if elem.__contains__(level):
                    elem = elem.__getitem__(level)
                else:
                    try:
                        elem = _follow_reftarget(elem)
                        elem = elem.__getitem__(level)
                    except Exception:
                        raise KeyError('Entry not found: ' + path)
        if isinstance(elem, h5py.Group):
            return Group(elem.id)
        elif isinstance(elem, h5py.Dataset):
            return Dataset(elem.id)
        elif isinstance(elem, h5py.File):
            return File(elem.id)

def parent(self): # noqa
        id = super(Dataset, self).parent.id
        return Group(id)

def __contains__(self, name): # noqa
        """ Test if a member name exists """
        if super(Group, self).__contains__(name):
            return True
        else:
            try:
                self.__getitem__(name)
                return True
            except KeyError:
                pass
        return False