default List<?> getExternalInstancesToMarkup() throws IOException {
		return List.of();
	}
Returns a list of items that should be recursively marked up.

@return list of structure mapped object instances that should be marked up
@throws IOException if error getting instances
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/golang/structmapping/StructureMarkup.java