Bug 321757 EPS adds a part without considering its placeholder if target container is not a part stack
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
public void testSaveAll_NoHandlers_F_TF_FF() {
		testSaveAll_NoHandlers(false, new boolean[] { true, false },
				new boolean[] { false, false });
	}
	public void testSaveAll_NoHandlers_F_FT_TT() {
		testSaveAll_NoHandlers(false, new boolean[] { false, true },
				new boolean[] { true, true });
	}
	public void testSaveAll_NoHandlers_F_FT_TF() {
		testSaveAll_NoHandlers(false, new boolean[] { false, true },
				new boolean[] { true, false });
	}
	public void testSaveAll_NoHandlers_F_FT_FT() {
		testSaveAll_NoHandlers(false, new boolean[] { false, true },
				new boolean[] { false, true });
	}
	public void testSaveAll_NoHandlers_F_FT_FF() {
		testSaveAll_NoHandlers(false, new boolean[] { false, true },
				new boolean[] { false, false });
	}
	public void testSaveAll_NoHandlers_F_FF_TT() {
		testSaveAll_NoHandlers(false, new boolean[] { false, false },
				new boolean[] { true, true });
	}
	public void testSaveAll_NoHandlers_F_FF_TF() {
		testSaveAll_NoHandlers(false, new boolean[] { false, false },
				new boolean[] { true, false });
	}
	public void testSaveAll_NoHandlers_F_FF_FT() {
		testSaveAll_NoHandlers(false, new boolean[] { false, false },