@Override
		public int indexOf(Object o) {
			return inBoundsOrNeg1(wrapped.keySet().indexOf(o));
		}
A list view suitable for {@link ValueSortedMap#keySet()} of {@link RestrictedValueSortedMap}
Ghidra/Framework/Generic/src/main/java/ghidra/generic/util/datastruct/RestrictedValueSortedMap.java