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