Attribute Macro master_link_change_event_handler 

#[master_link_change_event_handler]

Proc macro which is set on a function that need to be called whenever a master link change event happened. The function must accept a [Context] and [MasterLinkChangeSubevent]. Example:

#[master_link_change_event_handler]
fn master_link_change_event_handler(ctx: &Context, values: MasterLinkChangeSubevent) { ... }