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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def from_folder(cls, path:PathOrStr='.', extensions:Collection[str]=text_extensions, vocab:Vocab=None,
                    processor:PreProcessor=None, **kwargs)->'TextList':
        "Get the list of files in `path` that have a text suffix. `recurse` determines if we search subfolders."
        processor = ifnone(processor, [OpenFileProcessor(), TokenizeProcessor(), NumericalizeProcessor(vocab=vocab)])
        return super().from_folder(path=path, extensions=extensions, processor=processor, **kwargs)