Hook handler

Defines what should happen when a Flow Hook runs.

Hooks handlers are used to define the business logic of a Hook. It enables product teams to create and distribute a Flow as part of a standard product, while allowing customers to extend its functionality without breaking the standard implementation.

You can also use Hooks and Hook handlers to split a large Flow into smaller flowcharts.

To implement the business logic of a Hook, use a Hook handler in an Extension flowchart, and define the business logic there.

In the example below, the actions are executed in the following order:

flowchart LR
MainAction1[Main action 1] --> CustomBusinessLogic[Custom business logic] --> MainAction2[Main action 2]

Hooks and Hook handlers are simply control flow routing mechanisms, and does not do any actual work.