Gets the value of the group property.
This accessor method returns a reference to the live list,
not a snapshot. Therefore any modification you make to the
returned list will be present inside the JAXB object.
This is why there is not a set
method for the group property.
For example, to add a new item, do as follows:
getGroup().add(newItem);
Objects of the following type(s) are allowed in the list
{@link Group }
if (group == null) {
group = new ArrayList<Group>();
}
return this.group;