Order Specification Patterns
This is a scalable pattern. We describe the intent of the 1 stimulus - 2 response version here.
To describe a relationship between a stimulus event (P) and a sequence of two response events (S,T) in which the occurrence of the stimulus event must be followed by an occurrence of the sequence of response events within the scope. In state-based formalisms, the states satisfying the response must be distinct (i.e., S and T must be true in different states to count as a response), but the response may be satisfied by the same state as the stimulus (i.e., P and S may be true in the same state).
Examples and Known Uses
If a resource allocator grants a process access to a resource (GrantRes), the process will start using the resource (BeginRes) and finish using the resource (EndRes).
This is an Order pattern.