presto-main/src/main/java/io/prestosql/cost/PlanNodeStatsEstimate.java/PlanNodeStatsEstimate/equals
class PlanNodeStatsEstimate:    @Override
    public boolean equals(Object o)
    {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        PlanNodeStatsEstimate that = (PlanNodeStatsEstimate) o;
        return Double.compare(outputRowCount, that.outputRowCount) == 0 &&
                Objects.equals(symbolStatistics, that.symbolStatistics);
    }