You can create a single sidebar that displays views for an application. To create a single sidebar, perform the following step:
Instantiate a sidebar by passing a String ID, parent composite, and a configurer window to the ShelfPage constructor.
private Composite myPageForm;
IWorkbenchWindow window = configurer.getWindow();
myShelfPage = new ShelfPage(EXPANDED, myPageForm, window);
Parent topic: Sidebars: XPD622