Bug 282008 [Compatibility] Support for 'sticky' views
We need to support the legacy 'sticky' view mechanism. This is used for Help, Cheat Sheets and such that need to remain visible across perspective switches.
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/workbench/ui/renderers/swt/StackModelFactory.java
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 * Contributors:
 *     IBM Corporation - initial API and implementation
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package org.eclipse.e4.workbench.ui.renderers.swt;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.e4.core.services.annotations.In;
import org.eclipse.e4.core.services.context.IEclipseContext;
import org.eclipse.e4.core.services.context.spi.IContextConstants;
import org.eclipse.e4.ui.model.application.ApplicationPackage;
import org.eclipse.e4.ui.model.application.MItemPart;
import org.eclipse.e4.ui.model.application.MMenu;
import org.eclipse.e4.ui.model.application.MPart;
import org.eclipse.e4.ui.model.application.MStack;
import org.eclipse.e4.ui.model.application.MToolBar;
import org.eclipse.e4.ui.services.IStylingEngine;