@startuml
participant User
User -> A: DoWork
activate A #FFBBBB
A -> A: Internal call
activate A #DarkSalmon
A -> B: << createRequest >>
activate B
B --> A: RequestCreated
deactivate B
deactivate A
A -> User: Done
deactivate A
@enduml
H. Kim, J. Choi, D. Choi, H. Choi, and P. Kim. Proceedings of the 2012 ACM Research in Applied Computation Symposium, page 310--315. New York, NY, USA, ACM, (2012)
G. Mishne, and M. de Rijke. Proceedings ot the 7th International Conference on Computer-Assisted Information Retrieval (Recherche d'Information et ses Applications) - RIAO 2004, page 539--554. CID, (April 2004)