toSchema: ZodPipe<
ZodOptional<ZodString>,
ZodTransform<
| `${number}minute`
| `${number}minutes`
| `${number}hour`
| `${number}hours`
| `${number}day`
| `${number}days`
| `${number}week`
| `${number}weeks`
| `${number}month`
| `${number}months`
| `${number}year`
| `${number}years`
| undefined,
string
| undefined,
>,
> = ...