{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"TyKind::FnDef(CallableDefId::FunctionId(index_fn.0).to_chalk(self.db),"}]}
            TyKind::FnDef(CallableDefId::FunctionId(index_fn.0).to_chalk(self.db), index_fn.1)
        let index_fn_op = Operand::const_zst(
                .intern(Interner),