+ // Handler queueing status:
+ /// Indicates that there are a large number of [`ChannelAnnouncement`] (or other) messages
+ /// pending some async action. While there is no guarantee of the rate of future messages, the
+ /// caller should seek to reduce the rate of new gossip messages handled, especially
+ /// [`ChannelAnnouncement`]s.
+ fn processing_queue_high(&self) -> bool;
+