Control cyclic generator dependencies

[Nirei]

Currently two generators can be declared such as:

@Generator
public interface AGenerator {
    default A generate(B b) {
        return new A(b);
    }
}

@Generator
public interface BGenerator {
    default B generate(A a) {
        return new B(a);
    }
}

Creation of such generators will, at best, result in a StackOverflowException.

Precautions should be taken to prevent this situations at compile time and force users to modify such paradoxical declarations.