The URL where the file is located.
The file to be written.
The Access Grant VC proving the caller is authorized.
Optional
options: Partial<WriteFileOptions>Optional properties to customise the request behaviour, or override the Content-Type of the file.
A promise that resolves to a File if successful, and that rejects otherwise.
Overwrites the file using an Access Grant to prove the caller is authorized to write to the given resource URL.