private void getNextIndexRange() {
		if (indexRange == null) {
			return;
		}
		long oldEnd = indexRange.getEnd();
		if (oldEnd == Long.MAX_VALUE) {
			indexRange = null;
			return;
		}
		if (longIt.hasNext()) {
			indexRange = new IndexRange(oldEnd+1, longIt.next()-1);
			return;
		}
		indexRange = new IndexRange(oldEnd+1, Long.MAX_VALUE);
		
	}
@see ghidra.util.datastruct.IndexRangeIterator#next()
Ghidra/Framework/Generic/src/main/java/ghidra/util/datastruct/PropertySetIndexRangeIterator.java