Test the Cupcake app: Android Basics with Compose

[alghe-global]

URL of codelab
https://developer.android.com/codelabs/basic-android-kotlin-compose-test-cupcake?continue=https%3A%2F%2Fdeveloper.android.com%2Fcourses%2Fpathways%2Fandroid-basics-compose-unit-4-pathway-2%23codelab-https%3A%2F%2Fdeveloper.android.com%2Fcodelabs%2Fbasic-android-kotlin-compose-test-cupcake#4

In which task and step of the codelab can this issue be found?
Write more helper methods

Describe the problem
it is unclear where to write the helper methods; so far, up until this point, readers have been instructed to place helpers in dedicated files, whereas here, readers are instructed to create a method - some may be confused as to where (when it's part of the CupcakeScreenNavigationTest class - it should be explicitly stated rather than assuming readers will implicitly know)

Steps to reproduce?

1. Go to...
2. Click on...
3. See error...

Versions
Android Studio version:
API version of the emulator:

Additional information
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