| AbstractEventIntermediateTimerActivityHandler | 
 Abstract handler for timing events. 
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| AbstractGatewayActivityHandler | 
 Common functionality for and/or split and join gateways. 
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| CompositeCancelable | 
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| DefaultActivityHandler | 
 Default activity handler, which provides some
  useful helper methods. 
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| DefaultStepHandler | 
 Handles the transition of steps. 
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| EventEndErrorActivityHandler | 
 On error end propagate an exception. 
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| EventEndSignalActivityHandler | 
 On end of service call process set result on future. 
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| EventEndTerminateActivityHandler | 
 On error end propagate an exception. 
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| EventIntermediateErrorActivityHandler | 
 On error end propagate an exception. 
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| EventIntermediateMessageActivityHandler | 
 Handler for message events. 
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| EventIntermediateMultipleActivityHandler | 
 Event intermediate multi handler. 
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| EventIntermediateNotificationHandler | 
 Wait for an external notification (could be a signal or a fired rule). 
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| EventIntermediateRuleHandler | 
 Wait for an external notification (could be a signal or a fired rule). 
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| EventIntermediateServiceActivityHandler | 
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| EventIntermediateTimerActivityHandler | 
 Uses timer service for implementing waiting. 
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| EventMultipleStepHandler | 
 Step handler that can be used for event-multiple elements. 
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| EventStartRuleHandler | 
 When a subprocess has a rule start event it needs to be treated
  like an intermediate event (i.e. 
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| EventStartServiceActivityHandler | 
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| GatewayORActivityHandler | 
 Handler for or split and join gateways. 
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| GatewayParallelActivityHandler | 
 Handler for parallel split and join gateways. 
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| GatewayXORActivityHandler | 
 Handler for xor split and join gateways. 
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| Notifier | 
 Notifier for initiating external notifications. 
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| SplitInfo | 
 Keep information about a thread spawned at a split gateway used later when processing
  the corresponding join. 
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| SubProcessActivityHandler | 
 Handler for (embedded) sub processes. 
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| SubProcessActivityHandler.SubprocessResultHandler | 
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| TaskActivityHandler | 
 Handler for (external) tasks. 
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