(ROSE) How to represent it in sequence diagram?

[Eric Hua]

How to describe this situation in sequence diagram?   ClassA{   Init(){     SetEnable();   }     setEnable(){     ClassB.method1();     ClassB.method2();               }             } I list the diagram below, but I found it��s not very clear because In fact, method1() and method2() is belongs to setEnable(), but in the diagram, we can��t see this, how to describe this correctly?   ClassA {          ClassB b=new ClassB();          C.set(b);      }   Is it clear to describe this, or it there other better idea?     ClassA {          ClassB b=ClassD.createClassB();          C.set(b);      } How to draw this? any help is appreciated Best Regards, Eric Hua