Even more advanced UI test scenarios

A few training attendees completed the final set of exercises in the final codelab around writing custom steps, and asked if there were any more advanced training materials that they could move on to. Example user stories could be created which cover custom PCF controls and other more complex components not covered by EasyRepro or the Cap bindings.

Start by reviewing the final codelab and its custom-step exercises, then compare the gaps described for custom PCF controls and components beyond EasyRepro or the Cap bindings. Done would mean defining and adding advanced training materials with example user stories, but the issue does not identify files or tests to update.

Written by the indexing model from the issue text.