Discriminate Tx Type on level of array

[myrho]

There are two types of tx: tx_account and tx_utxo/address_tx_utxo. They are discriminated for each array item. However, they could be already discriminated one level higher, eg:

    address_txs:
      type: object
      required:
        - address_txs
      properties:
        next_page: 
          $ref: '#/components/schemas/next_page'
        oneOf:
        - $ref: '#/components/schemas/address_txs_utxo'
        - $ref: '#/components/schemas/txs_account'