Function safe_core::recovery::set_mdata_user_permissions

pub fn set_mdata_user_permissions<T: 'static>(
    client: &Client<T>, 
    name: XorName, 
    tag: u64, 
    user: User, 
    permissions: PermissionSet, 
    version: u64
) -> Box<CoreFuture<()>>

Sets user permission on the mutable data and tries to recover from errors.