Documentation of _congfiguredObserver has a typo

[Glenn Ramsey]

The documentation says:

A Step Should

        Implement the configure method to configure the step. This is typically in the form of a dialog. When implementing this function the class method self._configureObserver() should be called to inform the application that the step configuration has finished.

self._configureObserver() should be self._configuredObserver()

Apparently it also needs to set self._configured to True. Since _configured is a private variable it would be better to provide a public method to do this. I suggest
void setConfigured(bool) and bool getConfigured() (psuedocode, not python)