presto-spi/src/main/java/io/prestosql/spi/predicate/Domain.java/Domain/equals
class Domain:    @Override
    public boolean equals(Object obj)
    {
        if (this == obj) {
            return true;
        }
        if (obj == null || getClass() != obj.getClass()) {
            return false;
        }
        Domain other = (Domain) obj;
        return Objects.equals(this.values, other.values) &&
                this.nullAllowed == other.nullAllowed;
    }