Raise TypeError if given graph_id is None
Raise TypeError if given graph_id is None

okuta/chainer,okuta/chainer,hvy/chainer,wkentaro/chainer,jnishi/chainer,ktnyt/chainer,wkentaro/chainer,keisuke-umezawa/chainer,keisuke-umezawa/chainer,okuta/chainer,jnishi/chainer,pfnet/chainer,niboshi/chainer,jnishi/chainer,chainer/chainer,chainer/chainer,niboshi/chainer,jnishi/chainer,keisuke-umezawa/chainer,wkentaro/chainer,hvy/chainer,chainer/chainer,chainer/chainer,ktnyt/chainer,ktnyt/chainer,hvy/chainer,wkentaro/chainer,hvy/chainer,keisuke-umezawa/chainer,tkerola/chainer,niboshi/chainer,okuta/chainer,niboshi/chainer,ktnyt/chainer