@misc.disallow_when_frozen(FrozenNode)
    def add(self, child):
        child.parent = self
        self._children.append(child)
Build a new instance of the object from its vectorized state.
dataset/ETHPy150Open openstack/taskflow/taskflow/types/tree.py/Node.add--crossover with--dataset/ETHPy150Open menpo/menpo/menpo/transform/homogeneous/base.py/Homogeneous.from_vector