How many methods (including constructors) take no arguments? Refer to the following UML Class Diagram when answering this question. Pet - name : int - age : String - hasFleas : Boolean + licenseNumber : String + weight : float + Pet() + Pet(name : String, age : int) + getName() : String - setName(name : String) : void + getAge() : int + setAge(age : int) : void + speak() : void - scratch(itches : int) : void + toString() : String

public int countMethodsWithoutArguments() {
    int count = 0;
    for (Class c : getAllClasses()) {
        for (Method m : c.getMethods()) {
            if (m.getParameterTypes().length == 0) {
                count++;
            }
        }
    }
    return count;
}