def METHOD_NAME(self, method):
    self.data = open(
        os.path.join(TEST_DATA_DIR, "nquads.rdflib/bnode_context.nquads"), "rb"
    )
    self.data_obnodes = open(
        os.path.join(
            TEST_DATA_DIR, "nquads.rdflib/bnode_context_obj_bnodes.nquads"
        ),
        "rb",
    )