The desired input location and metadata.
| JSON representation | 
|---|
| { "content": string, "mimeType": string } | 
| Fields | |
|---|---|
| content | 
 File content, represented as a stream of bytes. Note: As with all  Currently, this field only works for files.annotate requests. It does not work for files.asyncBatchAnnotate requests. A base64-encoded string. | 
| mimeType | 
 The type of the file. Currently only "application/pdf", "image/tiff" and "image/gif" are supported. Wildcards are not supported. |