An expression evaluating to an object
of type XMPPContact.
value
A String value.
Remarks
Group property can be used to assign each Contact to a
specific group. This way you can combine similiar contacts
to be into the same group of users. For example you can
assign your co-workers or collegues to "Work"
group. Or you can assign your personal contacts (like
family or friends) into a "Personal" group
etc.
In GUI version wodXMPP will actually group your contacts
based on value of this property.