From 44c28ad1068ad40cf391b7a8a1b52f2dbdb6bee8 Mon Sep 17 00:00:00 2001
From: Yegor Vialov <vyalov.egor@gmail.com>
Date: Sat, 30 May 2020 10:39:00 +0000
Subject: [PATCH] isExist fix

---
 lib/entity_collection.class.dart | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/entity_collection.class.dart b/lib/entity_collection.class.dart
index 8480b83..96dd8e9 100644
--- a/lib/entity_collection.class.dart
+++ b/lib/entity_collection.class.dart
@@ -149,7 +149,7 @@ class EntityCollection {
   }
 
   bool isExist(String entityId) {
-    return _allEntities[entityId] != null;
+    return _allEntities.containsKey(entityId);
   }
 
   List<Entity> getByDomains({List<String> includeDomains: const [], List<String> excludeDomains: const [], List<String> stateFiler}) {