Can you explain what is meant by the term 'interactor' in the context of architectural patterns?

In architectural patterns, especially in the context of Flutter and clean architecture, an interactor is a component responsible for the application's business logic. It acts as an intermediary between the user interface layers and data layers.

The interactor handles requests from the UI, performs necessary operations (such as validation, calculations, repository calls to fetch data), and returns the result. Thus, it isolates the business logic from UI implementation details and data sources.

Example: if a user presses the "Load Profile" button, the UI calls the interactor, which retrieves user data from the repository, processes it, and returns the ready result to the UI.