Function lift_sync_fn4

pub fn lift_sync_fn4<'a, T1, T2, T3, T4, T5, E1, F: FnOnce(T1, T2, T3, T4) -> Result<T5, E1> + Send + Sync + 'a>(
    f: F,
) -> BoxedFn4<'a, T1, T2, T3, T4, T5, E1>

Function to box FnOnce sync function with 4 aguments and coerce it to BoxedFn4