protected void addManagePluginsAction() {

		configureToolAction = new DockingAction("Configure Tool", ToolConstants.TOOL_OWNER) {
			@Override
			public void actionPerformed(ActionContext context) {
				showConfig();
			}

			@Override
			public boolean isEnabledForContext(ActionContext context) {
				return isConfigurable();
			}
		};

		configureToolAction.setMenuBarData(new MenuData(
			new String[] { ToolConstants.MENU_FILE, "Configure" }, null, "PrintPost_PreTool"));

		configureToolAction.setEnabled(true);
		addAction(configureToolAction);
	}
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