{"ast_node_type":"variable","tokens":[{"end":79,"kind":"keyword","start":0,"text":"if"}]}
        if let TyKind::FnDef(fn_def, parameters) = callable_ty.kind(Interner) {
        let callable_ty = self.resolve_ty_shallow(callable_ty);
            let def: CallableDefId = from_chalk(self.db, *fn_def);