Bug 303218 Active part no longer seems to be queryable from the application's context
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
}
		public int getBroughtToTop() {
			return broughtToTop;
		}
		public boolean isValid() {
			return valid;
		}
		public List<MPart> getActivatedParts() {
			return activatedParts;
		}
		public List<MPart> getBroughtToTopParts() {
			return broughtToTopParts;
		}
		public void partActivated(MPart part) {
			if (valid && part == null) {
				valid = false;
			}
			activated++;
			activatedParts.add(part);
		}
		public void partBroughtToTop(MPart part) {
			if (valid && part == null) {
				valid = false;
			}
			broughtToTop++;
			broughtToTopParts.add(part);
		}
	}
}