- Added some more type checking

src/Dump.php

@@ -22,7 +22,7 @@ namespace Negundo\Client {
             static::$instances[] = $this;
         }
 
-        public function pushData(...$content) : ? object
+        public function pushData(...$content) : object|null|bool
         {
             $data = $this->dumpHandler->dumpData(...$content);