File content part.
| Property | Type | Description |
|---|---|---|
| file_data | String | A base64-encoded data URL of the image. Mutually exclusive with file_id. |
| file_id | String | The ID of a file uploaded via the Files API. Mutually exclusive with file_data. |
| filename | String | An optional filename. Only valid together with file_data. |
| INHERITED FROM Completion_Content_Part | ||
| type | String | The type discriminator. |