public Builder comment(final String comment) {
			if (comment.isBlank()) {
				throw new IllegalArgumentException("Comment cannot be blank.");
			}
			this.comment = comment;
			return this;
		}
Lines, starting with this string will be skipped.

@param comment the comment string
@return {@code this} builder
jenetics.incubator/src/main/java/io/jenetics/incubator/csv/CsvReader.java