private void initializeListingHoverService() {

		// The CodeFormatService is needed by the ReferenceHover.
		referenceHoverService = new ReferenceListingHover(tool, this);
		dataTypeHoverService = new DataTypeListingHover(tool);
		truncatedTextHoverService = new TruncatedTextListingHover(tool);
		labelListingHoverService = new LabelListingHover(tool);

		initializeListingHoverService(latestPanel);
		initializeListingHoverService(myPanel);
	}
Panel to select a data type in order to resolve an add conflict in the multi-user
external location merger.
Ghidra/Features/Base/src/main/java/ghidra/app/merge/listing/ExternalAddConflictPanel.java