How can I test whether a for loop is available in the Class?

Let me explain the use case first.

The use case is that a learner learning java is following a set of written instructions and using automated tests (read JUnit), I want to test whether they have successfully implemented the instruction.

Things that I need to find out programmatically, for example, is if a for loop exists in the code. Consider the following code

class AClass {
    public static void main(String[] args){
         for(int i=1; i<11; i++){
              System.out.println("Count is: " + i);
         }
    }
}

Is there a way that using reflection API, I can assert that AClass contains for(int i=1; i<11; i++)? Or any other way?

This question is an example. Ideally, there could be a code such as if (x) {} that I may want to find out inside a class.

I am not sure how feasible this is.

Thank you