public boolean containsEntirely(BigInteger index) {
		FieldLocation start = new FieldLocation(index, 0, 0, 0);
		FieldLocation end = new FieldLocation(index.add(BigInteger.ONE), 0, 0, 0);
		return containsEntirely(new FieldRange(start, end));
	}
Returns true if the all the fields in the layout with the given index are
included in this selection.
@param index index of the layout to test.
@return true if the all the fields in the layout with the given index are
included in this selection.
Ghidra/Framework/Docking/src/main/java/docking/widgets/fieldpanel/support/FieldSelection.java