Method isbnGroup

src/main/java/com/github/javafaker/Code.java:38–40

This can be overridden by specifying code: isbn_group: "some expression" in the appropriate yml file. @return an ISBN group number

()

     * @return an ISBN group number
     */
    public String isbnGroup() {
        return faker.regexify("[0-1]");
    }

    /**
     * This can be overridden by specifying