presto-main/src/main/java/io/prestosql/type/BooleanOperators.java/BooleanOperators/xxHash64
class BooleanOperators:    @ScalarOperator(XX_HASH_64)
    @SqlType(StandardTypes.BIGINT)
    public static long xxHash64(@SqlType(StandardTypes.BOOLEAN) boolean value)
    {
        return value ? TRUE_XX_HASH : FALSE_XX_HASH;
    }