private int compareAddress(CodeUnit cu1, CodeUnit cu2) {
		Address addr1 = cu1.getMinAddress();
		Address addr2 = cu2.getMinAddress();
		return addr1.compareTo(addr2);
	}
Determines whether the first code unit's minimum address is less 
 than, equal to, or greater than the second's.
@param cu1 the first code unit.
@param cu2 the second code unit.
@return -1 if less than, 0 if equal to, or 1 if greater than.
Ghidra/Features/Base/src/main/java/ghidra/program/util/MultiCodeUnitIterator.java