presto-spi/src/main/java/io/prestosql/spi/statistics/Estimate.java/Estimate/equals
class Estimate:    @Override
    public boolean equals(Object o)
    {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        Estimate estimate = (Estimate) o;
        return Double.compare(estimate.value, value) == 0;
    }