Successive intern calls in sequence diagrams

Question

I'm creating some sequence diagram and i want to detail my calls, but there is a class which call successively intern functions, would it be ok if i draw it this way:

If not how could i do ?

thanks !

Answer 1

No, that's syntactically simply wrong. You would use a Loop Fragment:

funcA is an internal call. Inside the two operations funcB and funcC will be called in a loop which is guarded by the condition some condition. This could as well be N times or whatever constraints the loop.