public void addRange(BigInteger startIndex, BigInteger endIndex) {
		addRange(new FieldLocation(startIndex, 0, 0, 0), new FieldLocation(endIndex, 0, 0, 0));
	}
Add the all the indexes from startIndex to endIndex to the selection.  The added
range includes the startIndex, but not the endIndex.
@param startIndex the start index of the layouts to include
@param endIndex the end index(not inclusive) of the layouts to include
Ghidra/Framework/Docking/src/main/java/docking/widgets/fieldpanel/support/FieldSelection.java