DOM element representing the member that was added to the group
Group the vertex was added to
DOM element representing the group
OptionalposOptional new location for the vertex that was added
OptionalsourceIf a vertex being added to some group is currently a member of some other group, that group is provided here.
The group's representation in the UI model.
Vertex that was added to the group
OptionalvertexSet to true if the vertex is also brand new, not copied from elsewhere in the dataset.
Payload for a
group:member:addedevent from the Surface.