Please show an example for download artifacts from a job in another child pipeline in the same parent-child pipeline hierarchy

When I am referring to the doc section needs:pipeline:job

It only shows the example for download artifacts from a job in its parent pipeline. However, it is clearly stated that we can download artifacts from a job in another child pipeline in the same parent-child pipeline hierarchy.

Could you please provide an example for that? I am really interested in using the feature.