The one explicitly represented change request may lead to other,
implicit, configuration changes when executed. For example, when the
deactivation of a pane is requested, then the view displayed in it has
also to be deactivated.
The requested change is committed to a configuration only when the
execute() method is called. Configuration change
requests are executed asynchronously. This is done to avoid reentrance
problems with objects that are registered as
XConfigurationChangeListener and at the same time make
configuration change requests. When the requests were executed
synchronously then they would be notified of the changes while their
request call has not yet returned.