def METHOD_NAME(self, examples: Iterable[Example]):
    """This component allows any type of single- or multi-label annotations.
    This method overwrites the more strict one from 'textcat'."""
    # check that annotation values are valid
    for ex in examples:
        for val in ex.reference.cats.values():
            if not (val == 1.0 or val == 0.0):
                raise ValueError(Errors.E851.format(val=val))