Function humantime_serde::option::deserialize

pub fn deserialize<'a, T, D>(d: D) -> Result<Option<T>, D::Error> where
    Serde<T>: Deserialize<'a>,
    D: Deserializer<'a>, 

Deserialize an Option<Duration> or Option<SystemTime>

This function can be used with serde_derive’s with and deserialize_with annotations.