@pytest.fixture
def cas_with_inheritance_xmi(cas_with_inheritance_xmi_path):
    with open(cas_with_inheritance_xmi_path, 'r') as f:
        return f.read()
@pytest.fixture
def cas_with_inheritance_xmi(cas_with_inheritance_xmi_path):
    with open(cas_with_inheritance_xmi_path, 'r') as f:
        return f.read()