private VTMatch getExistingMatch(Function sourceFunction, Function destinationFunction) {
		if (sourceFunction == null || destinationFunction == null) {
			return null;
		}

		Address sourceAddress = sourceFunction.getEntryPoint();
		Address destinationAddress = destinationFunction.getEntryPoint();
		VTSession session = controller.getSession();
		List<VTMatchSet> matchSets = session.getMatchSets();
		for (VTMatchSet matchSet : matchSets) {
			Collection<VTMatch> matches = matchSet.getMatches(sourceAddress, destinationAddress);
			for (VTMatch match : matches) {
				return match;
			}
		}
		return null;
	}
Provider for the version tracking function association table.
Ghidra/Features/VersionTracking/src/main/java/ghidra/feature/vt/gui/provider/functionassociation/VTFunctionAssociationProvider.java