Full:
    █
 1. └─rlang:::f()
 2.   └─rlanglibtest:::test_trace_unexported_child(e)
 3.     └─rlanglibtest:::test_trace_unexported(e)

Collapsed:
    █
 1. └─rlang:::f()
 2.   └─rlanglibtest:::test_trace_unexported_child(e)
 3.     └─rlanglibtest:::test_trace_unexported(e)

Branch:
 1. rlang:::f()
 2. rlanglibtest:::test_trace_unexported_child(e)
 3. rlanglibtest:::test_trace_unexported(e)
