@Override
	public boolean removed(Program program, AddressSetView set, TaskMonitor monitor,
			MessageLog log) {
		return false;
	}
getWStrLen
@param ad = address where unicode string is supposed to begin
@return number of unicode chars in string, -1 if not
a unicode string.  NOTE: Only English strings are considered.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/disassembler/AddressTableAnalyzer.java