/**
 * @schema AdminPostExchangesShippingActionReqSchema
 * type: object
 * description: The details of the shipping method to update.
 * x-schemaName: AdminPostExchangesShippingActionReqSchema
 * properties:
 *   custom_amount:
 *     type: number
 *     title: custom_amount
 *     description: The shipping method's custom amount.
 *   internal_note:
 *     type: string
 *     title: internal_note
 *     description: A note viewed by admin users only.
 *   metadata:
 *     type: object
 *     description: The exchange's metadata, can hold custom key-value pairs.
 *     externalDocs:
 *       url: https://docs.medusajs.com/api/admin#manage-metadata
 *       description: Learn how to manage metadata
 * 
*/