How to access myApp->method from a child

[bnilsson]

Excuse a very basic question:

What is the syntax for accessing a method in the main myApp class from a child object?

To clarify:

My main document application class myApp has a method getConfigData, needed by a child document class myDocument. From inside the myDocument class, how should I call getConfigData?

Simple, but I can't find it.