private long getMyIDForResultID(long resultID) {
		if (resultID == -1) {
			return -1;
		}
		try {
			return resultToMyMap.get(resultID);
		}
		catch (NoValueException e) {
			// Didn't find it, so return -1;
		}
		return -1;
	}
Gets symbol ID groups for each Library symbol that is new in the My program
(symbol wasn't in the Original program).
<br> Note: This method excludes any new Library symbols in Original whose matching Result ID
has already been placed in the resultIDsInAGroup set. Otherwise, each ID group that has a
Result ID will add it to the resultIDsInAGroup set.
@return the ID groups for new Library symbols in the My program.
Ghidra/Features/Base/src/main/java/ghidra/app/merge/listing/ExternalProgramMerger.java