Minor corrections

src/TgBotLib/Objects/BotCommand.php

@@ -45,8 +45,13 @@
         /**
          * @inheritDoc
          */
-        public static function fromArray(?array $data): BotCommand
+        public static function fromArray(?array $data): ?BotCommand
         {
+            if($data === null)
+            {
+                return null;
+            }
+
             $object = new self();
             $object->command = $data['command'] ?? null;
             $object->description = $data['description'] ?? null;

src/TgBotLib/Objects/BotDescription.php

@@ -33,8 +33,13 @@
         /**
          * @inheritDoc
          */
-        public static function fromArray(?array $data): BotDescription
+        public static function fromArray(?array $data): ?BotDescription
         {
+            if($data === null)
+            {
+                return null;
+            }
+
             $object = new self();
             $object->description = $data['description'];
 

src/TgBotLib/Objects/BotShortDescription.php

@@ -33,10 +33,14 @@
         /**
          * @inheritDoc
          */
-        public static function fromArray(?array $data): BotShortDescription
+        public static function fromArray(?array $data): ?BotShortDescription
         {
-            $object = new self();
+            if($data === null)
+            {
+                return null;
+            }
 
+            $object = new self();
             $object->short_description = $data['short_description'];
 
             return $object;

src/TgBotLib/Objects/CallbackGame.php

@@ -21,6 +21,11 @@
          */
         public static function fromArray(?array $data): ?CallbackGame
         {
+            if($data === null)
+            {
+                return null;
+            }
+
             return new self();
         }
     }