code: import stripe
  stripe.api_key = "sk_test_your_key"
  
  stripe.Transfer.modify_reversal(
    "tr_3LCspD2eZvKYlo2C02wegtL1",
    "trr_1LOIlS2eZvKYlo2C4uzbNRsJ",
    metadata={"order_id": "6735"},
  )
  '''Response {
    "id": "trr_1LOIlS2eZvKYlo2C4uzbNRsJ",
    "object": "transfer_reversal",
    "amount": 100,
    "balance_transaction": "txn_1032HU2eZvKYlo2CEPtcnUvl",
    "created": 1658484442,
    "currency": "usd",
    "destination_payment_refund": "pyr_1LOIlSI9Pbw6jkMZi6TfasGy",
    "metadata": {
      "order_id": "6735"
    },
    "source_refund": null,
    "transfer": "tr_3LCspD2eZvKYlo2C02wegtL1"
  }'''
nl: Update a reversalUpdates the specified reversal by setting the values of the parameters passed. Any parameters not provided will be left unchanged.
  This request only accepts metadata and description as arguments.Parameters metadata optional dictionary Set of key-value pairs that you can attach to an object. This can be useful for storing additional information about the object in a structured format. Individual keys can be unset by posting an empty value to them. All keys can be unset by posting an empty value to metadata.ReturnsReturns the reversal object if the update succeeded. This call will raise an error if update parameters are invalid