@Override
		public int compare(String o1, String o2) {

			if (o1 == null && o2 == null) {
				return 0;
			}
			else if (o1 != null && o2 == null) {
				return -1;
			}
			else if (o1 == null && o2 != null) {
				return 1;
			}
			return o1.compareToIgnoreCase(o2);
		}
Returns the checksum with the given name.
@param checksumName the name of the checksum to get.
@return the checksum with the given name, or null if there isn't one.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/checksums/ChecksumTableModel.java