| targetGuid | [[TargetGuidByName()]] によって取得できる target の GUID |
| fileGuid | The GUID of the file. |
| tag | The name of the asset tag. |
Adds an asset tag for the given file.
The asset tags identify resources that will be downloaded via On Demand Resources functionality. A request for a specific tag will initiate the download of all files, configured for that tag.