def METHOD_NAME(self):
    m2m_related_manager = mock.Mock(spec=["add", "set", "all"])
    self.obj.aliases = m2m_related_manager
    field = fields.Field(column_name="aliases", attribute="aliases")
    row = {
        "aliases": ["Foo", "Bar"],
    }
    field.save(self.obj, row, is_m2m=True)
    self.assertEqual(m2m_related_manager.add.call_count, 0)
    self.assertEqual(m2m_related_manager.set.call_count, 1)
    m2m_related_manager.set.assert_called_once_with(["Foo", "Bar"])