4.11 Call Sequences
The concrete CallSequence class shown in Figure 27 represents a subprogram call sequence.  It is a property holder and mode member. The CallSequence class has a multiplicity containment association to the SubprogramSubcomponent class to represent an individual subprogram call.  Each such call has a name (the subcomponent name) and a subprogram classifier reference to identify the subprogram signature.  Call sequences are permitted in instances of the SubprogramImpl class in the ThreadImpl class.
graphic
Figure 27 Subprogram Callsequences