group property
ID?
get
group
Optional group identifier for group messages.
Special Behavior: When a group message is split into individual messages for
group members, the receiver field is updated to the member's ID, and the original
group ID is stored in this group field to preserve context.
Returns the original group ID for split group messages, null for direct messages.
Implementation
ID? get group;
set
group
(ID? gid)
Set the group ID for a split group message.
gid is the original group ID (null for direct messages).
Implementation
set group(ID? gid);