`grey_text` matcher does not work for SwiftUI `Text` view

[adil-hussain-84]

The grey_text matcher does not work for a SwiftUI Text view. This is demonstrated by the UI testing target defined here which tests the application target defined here.

[adil-hussain-84]

I followed the White-Boxing guides and created a helper bundle here. I am able to tunnel calls to GREYHostApplicationDistantObject and define my own custom matchers. However, I am unsure how to define a matcher that matches the text in a SwiftUI Text view. At runtime, the element which corresponds to the SwiftUI Text view is of type SwiftUI.AccessibilityNode. How can I get the text value out from this SwiftUI.AccessibilityNode object?