on User Received Invitation
A callback for when a new member has been invited to GroupChannel. If the member accepts the invitation (refer to GroupChannel.acceptInvitation, onUserJoined will be called. Or, the member can also decline the invitation (refer to GroupChannel.declineInvitation to cause onUserDeclinedInvitation.
Since
3.0.30
Parameters
channel
The GroupChannel the new member has been invited.
inviter
The member who invited the invitee. It will be null
if invited by platform api.
invitees
Invitees list.