Method rewrite

datafusion-examples/examples/query_planning/optimizer_rule.rs:122–137

(
        &self,
        plan: LogicalPlan,
        _config: &dyn OptimizerConfig,
    )

    }

    fn rewrite(
        &self,
        plan: LogicalPlan,
        _config: &dyn OptimizerConfig,
    ) -> Result<Transformed<LogicalPlan>> {
        plan.map_expressions(|expr| {
            // This closure is called for all expressions in the current plan
            //
            // For example, given a plan like `SELECT a + b, 5 + 10`
            //
            // The closure would be called twice:
            // 1. once for `a + b`
            // 2. once for `5 + 10`
            self.rewrite_expr(expr)
        })
    }
}

impl MyOptimizerRule {