Error in inherited ItemList after update to 1.0.55

I’m using custom ItemList. After updating fastai to 1.0.55 I got:
TypeError: __init__() got an unexpected keyword argument 'from_item_lists'

I couldn’t find much information about this new keyword in the docs: what is it for, how is it used and why does it brake older code. As far as I can see there’s only a mentioning of it here

I’ll answer my own question: quick fix is to change kwargs to empty in method where labels for the ItemList are loaded.

def get_labels(self, path, **kwargs):
    kwargs = {}
    y = self._label_cls.read_arrays(path, self.items, **kwargs)
    res = self._label_list(x=self, y=y)
    return res