{"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"//"}]}
        // Add whitespace between adjoint puncts
        // FIXME: Emitting whitespace for this is really just a hack, we should get rid of it.
        if let Some([tt::Leaf::Punct(curr), tt::Leaf::Punct(next)]) = last_two {