@property
    def is_added_file(self):
        return (len(self) == 1 and self[0].source_start == 0 and
                self[0].source_length == 0)
Returns the element key.
dataset/ETHPy150Open matiasb/python-unidiff/unidiff/patch.py/PatchedFile.is_added_file--crossover with--dataset/ETHPy150Open espeed/bulbs/bulbs/model.py/Node.get_element_key