}
if (schema.additionalProperties) {
gen.forIn("key", data, (key) => gen.if(isAdditional(key, allProps), () => serializeKeyValue(cxt, key, {}, gen.let("first", first))));
}
if (schema.additionalProperties) {
gen.forIn("key", data, (key) => gen.if(isAdditional(key, allProps), () => serializeKeyValue(cxt, key, {}, gen.let("first", first))));