Added backslash before native functions

Author: norberttech

.php_cs

@@ -7,7 +7,8 @@ return PhpCsFixer\Config::create()
         'blank_line_after_opening_tag' => true,
         'single_blank_line_before_namespace' => true,
         'no_unused_imports' => true,
-        'single_quote' => true
+        'single_quote' => true,
+        'native_function_invocation' => true
     ])
     ->setFinder(
         PhpCsFixer\Finder::create()

src/AST/Expander.php

@@ -28,7 +28,7 @@ public function addArgument($argument)
 
     public function hasArguments() : bool
     {
-        return (boolean) count($this->arguments);
+        return (boolean) \count($this->arguments);
     }
 
     public function getArguments() : array