Representing the client type or source of an invoice.
## Enum
* `DASHBOARD` (value: `"DASHBOARD"`)
* `API_GATEWAY` (value: `"API_GATEWAY"`)
* `INTEGRATION` (value: `"INTEGRATION"`)
* `ON_DEMAND` (value: `"ON_DEMAND"`)
* `RECURRING` (value: `"RECURRING"`)
* `MOBILE` (value: `"MOBILE"`)
* `XENDIT_ENUM_DEFAULT_FALLBACK` (value: `UNKNOWN_ENUM_VALUE`)
If you encounter UNKNOWN_ENUM_VALUE, it means that this ENUM is unavailable in your current SDK version. Please upgrade to get the newest ENUM.