registerTestWindowingOwner property
Determines whether the binding automatically registers windowingOwner to
the fake windowing owner implementation.
Unit tests make use of this to mock out windowing system communication for widgets. An integration test would set this to false, to test real windowing system input.
This property should not change the value it returns during the lifetime
of the binding. Changing the value of this property risks very confusing
behavior as the WindowingOwner may be inconsistently registered or
unregistered.
Implementation
@protected
bool get registerTestWindowingOwner => true;