presto-main/src/main/java/io/prestosql/type/UuidOperators.java/UuidOperators/notEqual
class UuidOperators:    @ScalarOperator(NOT_EQUAL)
    @SqlType(StandardTypes.BOOLEAN)
    @SqlNullable
    public static Boolean notEqual(@SqlType(StandardTypes.UUID) Slice left, @SqlType(StandardTypes.UUID) Slice right)
    {
        return !left.equals(right);
    }