OAS3,Composition for models not working as result example value getting wrong

Hello @All, I am facing issue in composition of model classes where some classes not gets serialized.please help me out.

Follwing is the Situation:

One of the endpoint is returning the "A" response example value as expected:

Expected Result:

----------------------------

"A":{

           x:int,

           "b":{

                  y:int,

                  "c":{

                           p:int,

                           q:string,

                           }

                }

}

 

Actual Result:

----------------------

"A":{

           x:int,

           "b":{

                  y:int

                }

}

Note:C model class not getting 

 

Models:

-------------

Class A{

int x;

B b;

}

class B {

String y;

C c;

}

 

class c

{

 int p;

 String q;

}