curl -i -X GET "https://api.box.com/2.0/file_version_retentions" \
     -H "authorization: Bearer <ACCESS_TOKEN>"

client.file_version_retentions.get_file_version_retentions()

await client.fileVersionRetentions.getFileVersionRetentions();

try await client.fileVersionRetentions.getFileVersionRetentions()

client.getFileVersionRetentions().getFileVersionRetentions()

await client.FileVersionRetentions.GetFileVersionRetentionsAsync();

{
  "limit": 1000,
  "next_marker": "JV9IRGZmieiBasejOG9yDCRNgd2ymoZIbjsxbJMjIs3kioVii",
  "prev_marker": "JV9IRGZmieiBasejOG9yDCRNgd2ymoZIbjsxbJMjIs3kioVih",
  "entries": [
    {
      "id": "11446498",
      "type": "file_version_retention",
      "file_version": {
        "id": "12345",
        "type": "file_version",
        "sha1": "134b65991ed521fcfe4724b7d814ab8ded5185dc"
      },
      "file": {
        "id": "12345",
        "type": "file",
        "etag": "1",
        "sequence_id": "3",
        "name": "Contract.pdf",
        "sha1": "85136C79CBF9FE36BB9D05D0639C70C265C18D37",
        "file_version": {
          "id": "12345",
          "type": "file_version",
          "sha1": "134b65991ed521fcfe4724b7d814ab8ded5185dc"
        }
      },
      "applied_at": "2012-12-12T10:53:43-08:00",
      "disposition_at": "2012-12-12T10:53:43-08:00",
      "winning_retention_policy": {
        "id": "12345",
        "type": "retention_policy",
        "policy_name": "Some Policy Name",
        "retention_length": "365",
        "disposition_action": "permanently_delete",
        "max_extension_length": "365"
      }
    }
  ]
}

{
  "type": "error",
  "status": 400,
  "code": "item_name_invalid",
  "message": "Method Not Allowed",
  "context_info": {
    "message": "Something went wrong"
  },
  "help_url": "https://developer.box.com/guides/api-calls/permissions-and-errors/common-errors/",
  "request_id": "abcdef123456"
}