From 5a65634a28cd007416fa2d4b665ab60e5d46d920 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timo=20K=C3=B6sters?= <timo@koesters.xyz>
Date: Thu, 10 Dec 2020 15:42:14 +0100
Subject: [PATCH] federation-api: Make pdus of transactions optional under
 `unstable-pre-spec`

---
 .../src/transactions/send_transaction_message/v1.rs              | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ruma-federation-api/src/transactions/send_transaction_message/v1.rs b/ruma-federation-api/src/transactions/send_transaction_message/v1.rs
index fb430813..b6822edc 100644
--- a/ruma-federation-api/src/transactions/send_transaction_message/v1.rs
+++ b/ruma-federation-api/src/transactions/send_transaction_message/v1.rs
@@ -35,6 +35,7 @@ ruma_api! {
         /// List of persistent updates to rooms.
         ///
         /// Must not be more than 50 items.
+        #[cfg_attr(feature = "unstable-pre-spec", serde(default, skip_serializing_if = "<[_]>::is_empty"))]
         pub pdus: &'a [Raw<Pdu>],
 
         /// List of ephemeral messages.