| Interface | Description | 
|---|---|
| Freezable | Objects of classes implementing this class can be made inmutable calling
 freeze() method. | 
| Class | Description | 
|---|---|
| FlowCallNodeImpl | |
| FlowHandlerFactoryImpl | |
| FlowHandlerImpl | |
| FlowImpl | |
| FlowNodeImpl | |
| FlowReference | This class works as a reference that can be stored into session to 
 the current flow. | 
| FlowUtils | |
| MethodCallNodeImpl | |
| NavigationCaseImpl | |
| ParameterImpl | |
| ReturnNodeImpl | |
| SwitchCaseImpl | |
| SwitchNodeImpl | |
| ViewNodeImpl | 
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