private static boolean isSingleAsciiValue(byte[] bytes) {

		int lsbIndex = bytes.length - 1;
		if (bytes[lsbIndex] < 0) {
			return false;
		}
		for (int i = 0; i < lsbIndex; i++) {
			if (bytes[i] != 0) {
				return false;
			}
		}
		return true;
	}
Determine if bytes contain only a single ASCII value within least-significant-byte of
big-endian byte array

@param bytes value byte array in big-endian order
@return true if bytes contain a single ASCII value within least-significant-byte
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/StringDataInstance.java