private void showComponent(ComponentPlaceholder placeholder, final boolean visibleState,
			boolean requestFocus) {
		showComponent(placeholder, visibleState, requestFocus, false);
	}
Shows or hides the component associated with the given placeholder object.

@param placeholder the component placeholder object for the component to be shown or hidden.
@param visibleState true to show or false to hide.
@param requestFocus True signals that the system should request focus on the component.
Ghidra/Framework/Docking/src/main/java/docking/DockingWindowManager.java