public void matchAndSetXrefs(DescriptionManager manage) {
		TreeSet<ExecutableRecord> manageSet = manage.exerec;
		for (ExecutableRecord currentRecord : exerec) {
			ExecutableRecord match = manageSet.floor(currentRecord);
			if (match != null && match.getMd5().equals(currentRecord.getMd5())) {
				currentRecord.setXrefIndex(match.getXrefIndex());
			}
			else {
				currentRecord.setXrefIndex(0);		// Mark as having no match in manage
			}
		}
	}
For every ExecutableRecord in this container, if it is also in {@code manage},
copy the xrefValue from the {@code manage} version, otherwise 
set the xrefValue to zero
@param manage is the other container match from
Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/description/DescriptionManager.java