def _BecomeChildElement(self, tree):
    new_child = ElementTree.Element('')
    tree.append(new_child)
    new_child.tag = '{%s}%s' % (self.__class__._namespace,
                                self.__class__._tag)
    self._AddMembersToElementTree(new_child)
Tests that the manager is set for every children.
dataset/ETHPy150Open acil-bwh/SlicerCIP/Scripted/attic/PicasaSnap/atom/__init__.py/AtomBase._BecomeChildElement--crossover with--dataset/ETHPy150Open jorgecarleitao/pyglet-gui/tests/test_container.py/TestContainer.test_set_manager