Last scalar return types

src/PhpSpreadsheet/Calculation/Functions.php

@@ -226,9 +226,6 @@ class Functions
         return $flattened;
     }
 
-    /**
-     * @return null|mixed
-     */
     public static function scalar(mixed $value): mixed
     {
         if (!is_array($value)) {

src/PhpSpreadsheet/Chart/Properties.php

@@ -464,10 +464,8 @@ abstract class Properties
 
     /**
      * Get Glow Color Property.
-     *
-     * @return null|int|string
      */
-    public function getGlowColor(string $propertyName)
+    public function getGlowColor(string $propertyName): null|int|string
     {
         return $this->glowColor->getColorProperty($propertyName);
     }