Function safe_app::nfs::file_helper::write

pub fn write<C>(
    client: C, 
    file: File, 
    mode: Mode, 
    encryption_key: Option<Key>
) -> Box<dyn Future<Error = NfsError, Item = Writer<C>> + 'static> where
    C: Client, 

Helper function to update content of a file in a directory. A Writer object is returned, through which the data for the file can be written to the network. The file is actually saved in the directory listing only after writer.close() is invoked.