@Override
public PolyStringType clone() {
PolyStringType poly = new PolyStringType();
poly.setNorm(getNorm());
poly.setOrig(getOrig());
copyContent(getAny(), poly.getAny());
return poly;
}
public PolyStringType plus(PolyStringType operand) {
if (operand == null) {
return this;
}
return new PolyStringType(getOrig() + operand.getOrig());
}