presto-spi/src/main/java/io/prestosql/spi/type/SqlTimestampWithTimeZone.java/SqlTimestampWithTimeZone/equals
class SqlTimestampWithTimeZone:    @Override
    public boolean equals(Object obj)
    {
        if (this == obj) {
            return true;
        }
        if (obj == null || getClass() != obj.getClass()) {
            return false;
        }
        SqlTimestampWithTimeZone other = (SqlTimestampWithTimeZone) obj;
        return this.millisUtc == other.millisUtc &&
                this.timeZoneKey == other.timeZoneKey;
    }