From 4321b7fe145e88e93f5e23e4fc6be1e8bd3a4a71 Mon Sep 17 00:00:00 2001
From: Massimiliano Torromeo <massimiliano.torromeo@gmail.com>
Date: Fri, 5 Oct 2018 17:21:22 +0200
Subject: [PATCH] Add reference to the RFC defining the UID EXPUNGE command

---
 src/client.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/client.rs b/src/client.rs
index 59f54d6..f9e6002 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -534,6 +534,7 @@ impl <T: Read + Write> Session<T> {
 
     /// Permanently removes all messages that have both the \Deleted flag set and have a UID that is
     /// included in the specified message set.
+    /// The UID EXPUNGE command is defined in [RFC 4315 - "Internet Message Access Protocol (IMAP) - UIDPLUS extension"](https://tools.ietf.org/html/rfc4315#section-2.1).
     pub fn uid_expunge(&mut self, uid_set: &str) -> Result<()> {
         self.run_command_and_check_ok(&format!("UID EXPUNGE {}", uid_set))
     }