protected String getExtraMatchPairs(Set<VTAssociationPair> expected,
			Set<VTAssociationPair> actual) {
		return getMatchPairsOnlyInFirst(actual, expected, "extra");
	}
Return the VTMatch from matchSet that corresponds to sourceAddress and destinationAddress.
If more than one match is found, this function will fail.

@param matchSet The {@code VTMatchSet}.
@param sourceAddress The {@code Address} in the source program.
@param destinationAddress The {@code Address} in the destination program.
@return
Ghidra/Features/VersionTracking/src/test.slow/java/ghidra/feature/vt/gui/provider/AbstractVTCorrelatorTest.java