@SuppressWarnings("unchecked")
    public T setDelimiter(Character delimiter) {
        this.delimiter = delimiter;
        return (T) this;
    }
The builder for the serializers and deserializers for csv formats.
inlong-sort/sort-formats/format-row/format-csv/src/main/java/org/apache/inlong/sort/formats/csv/CsvFormatBuilder.java