curl --request POST \
  --url https://realtime-api.voiceflow.com/v1/stable/function \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "code": "<string>",
  "settings": {
    "timeoutMs": 300000
  },
  "description": "<string>"
}
'

{
  "function": {
    "id": "<string>",
    "name": "<string>",
    "code": "<string>",
    "image": "<string>",
    "settings": {
      "timeoutMs": 300000
    },
    "createdAt": "2023-11-07T05:31:56Z",
    "updatedAt": "2023-11-07T05:31:56Z",
    "pathOrder": [
      "<string>"
    ],
    "description": "<string>"
  }
}