presto-spi/src/main/java/io/prestosql/spi/block/DictionaryId.java/DictionaryId/equals
class DictionaryId:    @Override
    public boolean equals(Object o)
    {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        DictionaryId that = (DictionaryId) o;
        return mostSignificantBits == that.mostSignificantBits &&
                leastSignificantBits == that.leastSignificantBits &&
                sequenceId == that.sequenceId;
    }