@Override
	boolean contains(ComponentPlaceholder placeholder) {
		for (ComponentPlaceholder ph : windowPlaceholders) {
			if (ph.isActive() && ph.equals(placeholder)) {
				return true;
			}
		}
		return false;
	}
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