@startuml

actor "controller, service, ..." as x
participant "paginator"
participant "Request"

x -> paginator: getCurrentPage()
activate paginator

paginator -> Request: read the `page` parameter in GET request
activate Request
Request -> paginator
deactivate Request

paginator -> paginator: construct a page object for current page number
paginator -> x: return the `page`
deactivate paginator

@enduml