use crate::Time; /// Accessimpl Time {    /// Return true if this time has been initialized to anything non-default, i.e. 0.    pub fn is_set(&self) -> bool {        *self != Self::default()    }     /// Return the passed seconds since epoch since this signature was made.    pub fn seconds(&self) -> u32 {        self.seconds_since_unix_epoch    }} /// Indicates if a number is positive or negative for use in [`Time`].#[derive(PartialEq, Eq, Debug, Hash, Ord, PartialOrd, Clone, Copy)]#[cfg_attr(feature = "serde1", derive(serde::Serialize, serde::Deserialize))]#[allow(missing_docs)]pub enum Sign {    Plus,    Minus,} ///pub mod format;mod init;mod write; mod sign {    use crate::time::Sign;     impl From<i32> for Sign {        fn from(v: i32) -> Self {            if v < 0 {                Sign::Minus            } else {                Sign::Plus            }        }    }} mod impls {    use crate::time::Sign;    use crate::Time;     impl Default for Time {        fn default() -> Self {            Time {                seconds_since_unix_epoch: 0,                offset_in_seconds: 0,                sign: Sign::Plus,            }        }    }}