Bug 299529 UI scheduling strategy causes injections to be delayed
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/ESelectionServiceTest.java
public Object input;
		@Inject
		@Optional
		public void setInput(@Named(ESelectionService.SELECTION) Object current) {
			input = current;
		}
	}
	static class ProviderPart extends ConsumerPart {
		private ESelectionService selectionService;
		@Inject
		public void setSelectionService(ESelectionService s) {
			selectionService = s;
		}
		public void setSelection(Object selection) {
			selectionService.setSelection(selection);
		}
	}
	static class TrackingProviderPart extends ProviderPart {