private boolean addIfUnique(List<CryptoRec> recs, CryptoRec newRec) {
		for (CryptoRec rec : recs) {
			if (rec.value.equals(newRec.value)) {
				return false;
			}
		}
		recs.add(newRec);
		return true;
	}
Adds a password / file combo to the cache.

@param fsrl {@link FSRL} file
@param password password to unlock the file.  Specified {@link Password} is
only copied, clearing is still callers responsibility
Ghidra/Features/Base/src/main/java/ghidra/formats/gfilesystem/crypto/CachedPasswordProvider.java