def METHOD_NAME(self, ethane):
    ethane.remove(ethane[2])
    assert len(ethane["methyl1"]["port[1]"].access_labels) == 1
    ethane.labels["new_port"] = ethane["methyl1"]["port[1]"]
    assert len(ethane["new_port"].access_labels) == 2
    assert "['new_port']" in ethane["new_port"].access_labels