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#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
pub struct Order {
    removes: Vec<(usize, Option<String>)>,
    inserts: Vec<(Option<String>, usize)>,
}

impl Order {
    #[inline(always)]
    pub fn new(
        removes: Vec<(usize, Option<String>)>,
        inserts: Vec<(Option<String>, usize)>,
    ) -> Self {
        Order {
            removes: removes,
            inserts: inserts,
        }
    }

    #[inline(always)]
    pub fn removes(&self) -> &[(usize, Option<String>)] {
        &*self.removes
    }
    #[inline(always)]
    pub fn inserts(&self) -> &[(Option<String>, usize)] {
        &*self.inserts
    }

    #[inline]
    pub fn is_empty(&self) -> bool {
        self.removes.is_empty() && self.inserts.is_empty()
    }
}