@Override
	public void setSingleExecutable(String md5) throws LSHException {
		if (singleExeXref >= 0) {
			throw new LSHException("Cannot reset singled executable");
		}
		super.setSingleExecutable(md5);
	}
Construct the scorer.  If normalized scores are required, a self-score cacher
must be provided.
@param cache is the self-score cacher or null
@throws LSHException for problems initializing the cache
Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/client/ExecutableScorerSingle.java