public SimpleQuantity copy() {
SimpleQuantity dst = new SimpleQuantity();
copyValues(dst);
dst.value = value == null ? null : value.copy();
dst.comparator = comparator == null ? null : comparator.copy();
dst.unit = unit == null ? null : unit.copy();
dst.system = system == null ? null : system.copy();
dst.code = code == null ? null : code.copy();
return dst;
}
