From 790ef57598858bd8a504116e4e2a30bf9edf4ec2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergio=20Mart=C3=ADnez=20Portela?=
 <sergio@codigoparallevar.com>
Date: Sun, 23 Apr 2023 20:49:28 +0200
Subject: [PATCH] Add extra check for TimeRange validity.

---
 org_rw/org_rw.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/org_rw/org_rw.py b/org_rw/org_rw.py
index 734851f..90ff004 100644
--- a/org_rw/org_rw.py
+++ b/org_rw/org_rw.py
@@ -1067,6 +1067,8 @@ def token_from_type(tok_type):
 
 class TimeRange:
     def __init__(self, start_time: OrgTime, end_time: OrgTime):
+        assert start_time is not None
+        assert end_time is not None
         self.start_time = start_time
         self.end_time = end_time