[Feature Request] Sample of an activity calling a client to schedule or update a workflow

Is your feature request related to a problem? Please describe.

I would love to have a sample that shows how to do workflow->workflow interaction with a client, so : workflow->activity->client->workflow interaction

This is a common discussion with customers and a sample in go and python would be amazing to share with them.

Describe the solution you'd like

A sample that shows how to do a client inside a workflow's activity. Ideally it would start a schedule.

Our docs say it is a good option, and I want to point them in that direction:

Additional context

Esamina innanzitutto gli esempi Python esistenti e il flusso di interazione workflow-to-activity-to-client documentato. Aggiungi un esempio che mostri un'activity che utilizza un client per interagire con un altro workflow, idealmente avviando uno schedule, e verifica che l'esempio dimostri chiaramente l'interazione richiesta.