Method isbn13

src/main/java/com/github/javafaker/Code.java:98–100

@return a valid ISBN13 number with no separators (ex. 9789604250590)

()

     * @return a valid ISBN13 number with no separators (ex. 9789604250590)
     */
    public String isbn13() {
        return isbn13(false);
    }

    /**
     * @param separator true if you want separators returned, false otherwise