iOS SDK - capture event for "Invite Others"

In Jitsi conference, there is a button “Invite Others”. When this conference is displayed on iOS, is there a way to capture the event when the user clicks on “Invite Others”? Currently the Jitsi iOS SDK captures the events terminated, joined and willJoin. It doesn’t seem to capture other events. How can I capture the fact the user clicked “Invite Others”, in iOS SDK.