Function ostree::checksum_file_from_input

pub fn checksum_file_from_input<P: IsA<InputStream>, Q: IsA<Cancellable>>(
    file_info: &FileInfo,
    xattrs: Option<&Variant>,
    in_: Option<&P>,
    objtype: ObjectType,
    cancellable: Option<&Q>
) -> Result<Checksum, Box<dyn Error + Send>>

Compute the OSTree checksum of a content object.