Typically the calls on a Sequence Diagram are of the form
function(parameters);
How do I diagram chained function calls like this?:
stdList.front().pack(parameters);
front() returns an object of a different class so this is sort of like writing…
StdList stdList;
SomeClass a& = stdList.front();
a.pack(parameters);
Looks like a self-call. Have the method call loop back to the instance that called it.