code: public JodaBeanSer withIncludeDerived(boolean includeDerived) {
          return new JodaBeanSer(indent, newLine, converter, iteratorFactory, shortTypes, deserializers, includeDerived);
      }
docs: Returns a copy of this serializer with the specified include derived flag.
  <p>
  The default deserializers can be modified.
  <p>
  This is used to set the output to include derived properties.
  
  @param includeDerived  whether to include derived properties on output
  @return a copy of this object with the converter changed, not null