Take into account nested functions (FunctionNode)
Take into account nested functions (FunctionNode)

jnishi/chainer,keisuke-umezawa/chainer,wkentaro/chainer,hvy/chainer,chainer/chainer,okuta/chainer,hvy/chainer,ktnyt/chainer,keisuke-umezawa/chainer,jnishi/chainer,niboshi/chainer,ktnyt/chainer,okuta/chainer,pfnet/chainer,ktnyt/chainer,ronekko/chainer,ktnyt/chainer,anaruse/chainer,okuta/chainer,hvy/chainer,jnishi/chainer,rezoo/chainer,aonotas/chainer,chainer/chainer,jnishi/chainer,niboshi/chainer,wkentaro/chainer,wkentaro/chainer,niboshi/chainer,chainer/chainer,hvy/chainer,tkerola/chainer,okuta/chainer,niboshi/chainer,wkentaro/chainer,chainer/chainer,keisuke-umezawa/chainer,keisuke-umezawa/chainer