{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"//"}]}
        // `sig` determines our local decls, and thus the callee type in the `Call` terminator. This
    if let CallKind::Indirect(fnty) = call_kind {
        // can only be an `FnDef` or `FnPtr`, but currently will be `Self` since the types come from