private ExternalLocation[] getExternalLocationsForFunctions(Function[] functions) {
		ExternalLocation[] externalLocations = new ExternalLocation[4];

		if (functions[RESULT] != null) {
			externalLocations[RESULT] = functions[RESULT].getExternalLocation();
		}
		if (functions[LATEST] != null) {
			externalLocations[LATEST] = functions[LATEST].getExternalLocation();
		}
		if (functions[MY] != null) {
			externalLocations[MY] = functions[MY].getExternalLocation();
		}
		if (functions[ORIGINAL] != null) {
			externalLocations[ORIGINAL] = functions[ORIGINAL].getExternalLocation();
		}
		return externalLocations;
	}
Puts the LongLongHashtables, that map the symbol IDs from LATEST, MY, and
ORIGINAL programs to the RESULT program symbol IDs, into the Merge Manager.
Ghidra/Features/Base/src/main/java/ghidra/app/merge/listing/ExternalFunctionMerger.java