Optimization: skip one function call in CoreFunc::call

src/CoreFunc.php

@@ -22,7 +22,7 @@ class CoreFunc extends Func
     {
         $this->validateArgs(count($args));
 
-        return parent::call($args);
+        return ($this->closure)(...$args);
     }
 
     private function validateArgs(int $count)

src/Func.php

@@ -24,8 +24,5 @@ abstract class Func
         return $this->doc;
     }
 
-    public function call(array $args)
+    abstract public function call(array $args);
-    {
-        return ($this->closure)(...$args);
-    }
 }

src/UserFunc.php

@@ -33,4 +33,9 @@ class UserFunc extends Func
 
         return $newEnv;
     }
+
+    public function call(array $args)
+    {
+        return ($this->closure)(...$args);
+    }
 }