use serde::Serialize;
#[derive(Serialize, Debug)]
pub struct Timestamp {
#[serde(skip_serializing_if = "Option::is_none")]
start: Option<u128>,
#[serde(skip_serializing_if = "Option::is_none")]
end: Option<u128>,
}
impl Timestamp {
pub fn new(start: Option<u128>, end: Option<u128>) -> Timestamp {
Self { start, end }
}
}