what are Task Flow Activities and Control Flows?

Method Call:Invokes a method, typically a method on a managed bean. A method call activity can be placed anywhere within an application's control flow to invoke application logic based on control flow rules.

Parent Action:Allows a bounded task flow to generate outcomes that are passed to its parent view activity.

Router:Evaluates an EL expression and returns an outcome based on the value of the expression. For example, a router in a credit check task flow might evaluate the return value from a previous method call and generate success, failure, or retry outcomes based on various cases. These outcomes can then be used to route control to other activities in the task flow.