+To issue tickets after other events (such as application-layer changes),
+SSL_new_session_ticket() is used by a server application to request that a new
+ticket be sent when it is safe to do so. New tickets are only allowed to be
+sent in this manner after the initial handshake has completed, and only for TLS
+1.3 connections. The ticket generation and transmission are delayed until the
+server is starting a new write operation, so that it is bundled with other
+application data being written and properly aligned to a record boundary.
+SSL_new_session_ticket() can be called more than once to request additional
+tickets be sent; all such requests are queued and written together when it is
+safe to do so. Note that a successful return from SSL_new_session_ticket()
+indicates only that the request to send a ticket was processed, not that the
+ticket itself was sent. To be notified when the ticket itself is sent, a
+new-session callback can be registered with L<SSL_CTX_sess_set_new_cb(3)> that
+will be invoked as the ticket or tickets are generated.
+