Method try_from

backend/src/graphql/time.rs:63–66

(ts: Geotime)

    type Error = Error;

    fn try_from(ts: Geotime) -> Result<Self> {
        let dt = chrono::DateTime::try_from(ts)?;
        Ok(DateTime(dt))
    }
}

impl TryFrom<&types::Timerange> for Timerange {