@Override
	protected DockingWindowManager createDockingWindowManager(boolean isDockable, boolean hasStatus,
			boolean isModal) {
		return new DockingWindowManager(this, null, isModal, isDockable, hasStatus,
			new OpenFileDropHandlerFactory(this));
	}
We need to do this here, since our parent constructor calls methods on us that need the 
extension manager.
@return the extension manager
Ghidra/Framework/Project/src/main/java/ghidra/framework/project/tool/GhidraTool.java