presto-main/src/main/java/io/prestosql/sql/planner/iterative/rule/ExpressionRewriteRuleSet.java/AggregationExpressionRewrite/AggregationExpressionRewrite
class AggregationExpressionRewrite:        AggregationExpressionRewrite(ExpressionRewriter rewriter)
        {
            this.rewriter = rewriter;
        }