{"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"//"}]}
    // as distinct arguments. (This is the "rust-call" ABI hack.) Normally, codegen has
    // meanwhile the closure body expects the arguments (here, `a`, `b`, and `c`)
    // the job of unpacking this tuple. But here, we are codegen. =) So we want to create