public void makeSelectedTab(ComponentPlaceholder placeholder) {
		if (invalid) {
			return;
		}

		if (!(comp instanceof JTabbedPane)) {
			return;
		}

		DockableComponent dc = placeholder.getComponent();
		if (dc != null) {
			JTabbedPane tab = (JTabbedPane) comp;
			if (tab.getSelectedComponent() != dc) {
				tab.setSelectedComponent(dc);
			}
		}
	}
Makes the component the selected tab.
@param placeholder the component placeholder object of the component to be shown in the active tab.
Ghidra/Framework/Docking/src/main/java/docking/ComponentNode.java