Variable: SubmissionHandoff

const SubmissionHandoff: z.ZodObject<{
  handoff: z.ZodNullable<z.ZodObject<{
     expiresAt: z.ZodCoercedDate<unknown>;
     url: z.ZodURL;
  }, z.core.$strip>>;
}, z.core.$strip>;

GET /collection-submissions/:id/handoff: the vendor's hosted page where the applicant continues the check their run waits for, and when its link stops working (ask again after it); null when the vendor needs nothing more from them and the run waits for its webhook.