List direct income attachments

{
  "type": "object",
  "properties": {
    "attachments": {
      "type": [
        "array",
        "null"
      ],
      "items": {
        "type": "object",
        "description": "The Codat API supports pulling and pushing of file attachments for invoices, bills, direct costs, and direct incomes.\n\n> **Retrieving attachments**\n> \n> If a company is authorized, you can query the Codat API to read, download, and upload attachments without requiring a fresh sync of data.\n\nUnlike other data types, Codat doesn't support sync settings for attachments.\n\nView the coverage for accounts in the <a className=\"external\" href=\"https://knowledge.codat.io/supported-features/accounting?view=tab-by-data-type&dataType=chartOfAccounts\" target=\"_blank\">Data coverage explorer</a>.\n"
      }
    }
  }
}