Function mz_sql::ast::fold::fold_if_exists_behavior

pub fn fold_if_exists_behavior<F, T, T2>(
    folder: &mut F,
    node: IfExistsBehavior
) -> IfExistsBehavior
where
    T: AstInfo,
    T2: AstInfo,
    F: Fold<T, T2> + ?Sized,