uselb_rs::model::file::File;usenfs3_server::nfs3_types::nfs3::filename3;pubfnget_string(f:&filename3)-> String{String::from_utf8(f.as_ref().to_vec()).expect("Invalid UTF-8")}/// Should be the same as `UuidFileHandle::fileid`.
pubfnfile_id(f:&File)->u64{
f.id.as_u64_pair().0}