@startuml !includeurl https://isgb.otago.ac.nz/infosci/mark.george/templates/raw/master/plantuml/default-skin.ipu title Title Goes Here actor User as user participant " Class \n One " as one << blah >> participant " Class \n Two" as two << blah >> #PaleGreen participant " Class \n Three " as three user -> one : clicks something activate one one -> one : do something one -> two : do something else activate two two --> one : response deactivate two one -> one : do something\nwith response one ->> three : async call deactivate one activate three three -> three : do stuff three ->> one : send response deactivate three activate one one -> one : display response one --> user : user sees response deactivate one @enduml