@staticmethod
    def _pkg_item_diff(pkg_item_1, pkg_item_2):
        item_presenter_1 = ItemPresenter(pkg_item_1)
        item_presenter_2 = ItemPresenter(pkg_item_2)
        text_1 = item_presenter_1.text
        text_2 = item_presenter_2.text
        filename_1 = item_presenter_1.filename
        filename_2 = item_presenter_2.filename
        return diff(text_1, text_2, filename_1, filename_2)
Return a diff between the text of *pkg_item_1* and that of
dataset/ETHPy150Open python-openxml/opc-diag/opcdiag/presenter.py/DiffPresenter._pkg_item_diff