public void initializeListingHoverHandler(AbstractHoverProvider otherHandler) {
		otherHandler.program = program;
		otherHandler.enabled = enabled;
		otherHandler.hoverServices = new ArrayList<>(hoverServices);
	}
Sets the object that decides where to place the popup window. 
@param popupWindowPlacer the placer
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/hover/AbstractHoverProvider.java