Method is_in

crates/paimon/src/spec/predicate.rs:639–644

(&self, field: &str, literals: Vec<Datum>)

    // -- set operators --

    pub fn is_in(&self, field: &str, literals: Vec<Datum>) -> Result<Predicate> {
        if literals.is_empty() {
            return Ok(Predicate::AlwaysFalse);
        }
        self.leaf(field, PredicateOperator::In, literals)
    }

    pub fn is_not_in(&self, field: &str, literals: Vec<Datum>) -> Result<Predicate> {
        if literals.is_empty() {