[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

まず既存の Python サンプルと、文書化されている workflow-to-activity-to-client のインタラクションの流れを確認してください。activity が client を使用して別の workflow とやり取りする例を、できれば schedule を開始する形で追加し、その例が要求されたインタラクションを明確に示していることを確認してください。