creation of a subtree in a transaction

[d1g1t4l]

I am trying to create the following structure:

/node1/node2

Node1 is a counter node so I don't know its name when I am preparing the transaction. Conceptually the transaction would be:

Begin
create /node1
create /node1/node2
End

The problem is that I can't hardcode /node1/node2 as I don't know node1's name. To solve this I would need a placeholder for the name of the node created in the previous operation, something like this:

Begin
create /node1
create ?/node2
End

I don't even know if this is supported by zookeeper. If it is then this would be a feature request, any clever ways to do it with minimum boilerplate would be appreciated.