GET /v2/custodian-auth-flows/:id

Fetch one custodian auth flow.

Path params:
  id (required) — Auth-flow identifier (e.g. "nordea-20260630").

Response (200 OK):
{
  "data": {
    "id": "string",
    "type": "custodian-auth-flow",
    "attributes": {
      "expectedFiles": [
        {
          "name":        "string",
          "description": "string",
          "fileType":    "string"
        }
      ],
      "supportedConsentTypes": [ "all", "specific" ]
    },
    "relationships": {
      "custodian": { "data": { "type": "custodian", "id": "string" } }
    }
  }
}