final String propertyName = fieldOutline.getPropertyInfo().getName(true);
      final JClass elementClass = fieldOutline.getRawType().boxify().getTypeParameters().get(0);
      final JPrimitiveType INT = fieldOutline.parent().parent().getCodeModel().INT;
      JMethod method = implClass.method(JMod.PUBLIC, elementClass, "with" + propertyName);
      JVar index = method.param(INT, "index");
      JBlock body = method.body();
      JVar list = body.decl(fieldOutline.getRawType(), "list", JExpr._this().invoke("get" + propertyName));
      JConditional _ifListIsTooSmall = body._if(list.invoke("size").lte(index));
      JBlock _ifListIsTooSmallThen = _ifListIsTooSmall._then();
      JForLoop _for = _ifListIsTooSmallThen._for();
      JVar i = _for.init(INT, "i", list.invoke("size"));
      _for.test(i.lte(index));
      _for.update(i.incr());
      _for.body().invoke(list, "add").arg(JExpr._null());
      JVar element = body.decl(elementClass, "value", list.invoke("get").arg(index));
      JConditional _ifElementIsNull = body._if(element.eq(JExpr._null()));
      JBlock _ifElementIsNullThen = _ifElementIsNull._then();
      _ifElementIsNullThen.assign(element, JExpr._new(element.type()));
      _ifElementIsNullThen.invoke(list, "set").arg(index).arg(element);
      body._return(element);
   }