Hi @YuWatanabe, I don't think this is possible at the moment, but it is definitely sounds like an interesting feature to have. Could you create an issue in github, possibly proposing the syntax. And of course any pull requests would be welcome 
Hi @YuWatanabe, I don't think this is possible at the moment, but it is definitely sounds like an interesting feature to have. Could you create an issue in github, possibly proposing the syntax. And of course any pull requests would be welcome
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