presto-main/src/main/java/io/prestosql/sql/planner/optimizations/OptimizeMixedDistinctAggregations.java/OptimizeMixedDistinctAggregations/getNewNonDistinctAggregateSymbols
class OptimizeMixedDistinctAggregations:        public Map<Symbol, Symbol> getNewNonDistinctAggregateSymbols()
        {
            return newNonDistinctAggregateSymbols;
        }