Bug 327925 Deprecate EPartService's deactivate(MPart) method
It has been marked as @noreference for some time. Now that part activation history has been implemented and the hidePart(*) methods have been altered to take care of this, the deactivate(MPart) method should be removed.
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
application.getChildren().add(window);
		application.setSelectedElement(window);
		MPerspectiveStack perspectiveStack = AdvancedFactoryImpl.eINSTANCE
				.createPerspectiveStack();
		window.getChildren().add(perspectiveStack);
		window.setSelectedElement(perspectiveStack);
		MPerspective perspective = AdvancedFactoryImpl.eINSTANCE
				.createPerspective();
		perspectiveStack.getChildren().add(perspective);
		perspectiveStack.setSelectedElement(perspective);
		MPartStack partStackA = BasicFactoryImpl.eINSTANCE.createPartStack();
		perspective.getChildren().add(partStackA);
		perspective.setSelectedElement(partStackA);
		MPart partA = BasicFactoryImpl.eINSTANCE.createPart();
		partStackA.getChildren().add(partA);
		partStackA.setSelectedElement(partA);
		MPartStack partStackB = BasicFactoryImpl.eINSTANCE.createPartStack();
		perspective.getChildren().add(partStackB);
		initialize(applicationContext, application);
		getEngine().createGui(window);
		EPartService partService = window.getContext().get(EPartService.class);
		MPlaceholder placeholderB = partService
				.createSharedPart("partId", true);
		MPart partB = (MPart) placeholderB.getRef();
		partB.setCurSharedRef(placeholderB);
		placeholderB.setToBeRendered(false);
		partB.setToBeRendered(false);
		partStackB.getChildren().add(placeholderB);
		partStackB.setSelectedElement(null);
		partService.showPart(partB, PartState.VISIBLE);