Function safe_app::nfs::file_helper::update

pub fn update<S>(
    client: impl Client, 
    parent: MDataInfo, 
    name: S, 
    file: &File, 
    version: Version
) -> Box<dyn Future<Error = NfsError, Item = u64> + 'static> where
    S: AsRef<str>, 

Update the file.

If version is Version::GetNext, the current version is first retrieved from the network, and that version incremented by one is then used as the actual version.