diff --git a/library/Utils.php b/library/Utils.php
index c241a0aa315a440ec408c01274a904756667a6b3..1d24e0652a8eb7072eff7c013589610ea13a0801 100644
--- a/library/Utils.php
+++ b/library/Utils.php
@@ -2,82 +2,82 @@
 
 class Utils
 {
-    private function __construct() {}
+  private function __construct () {}
 
-    /**
-     * @param array $array
-     * @return array
-     * Note : Recursively filters out empty values and arrays at any depth.
-     */
-    public static function recursiveArrayFilter (array $array): array
-    {
-        // First filter the array for non-empty elements
-        $filtered = array_filter($array, function ($item) {
-            if (is_array($item)) {
-                // Recursively filter the sub-array
-                $item = $this->recursiveArrayFilter($item);
-                // Only retain non-empty arrays
-                return !empty($item);
-            } else {
-                // Retain non-empty scalar values
-                return !empty($item);
-            }
-        });
+  /**
+   * @param array $array
+   * @return array
+   * Note : Recursively filters out empty values and arrays at any depth.
+   */
+  public static function recursiveArrayFilter (array $array): array
+  {
+    // First filter the array for non-empty elements
+    $filtered = array_filter($array, function ($item) {
+      if (is_array($item)) {
+        // Recursively filter the sub-array
+        $item = $this->recursiveArrayFilter($item);
+        // Only retain non-empty arrays
+        return !empty($item);
+      } else {
+        // Retain non-empty scalar values
+        return !empty($item);
+      }
+    });
 
-        return $filtered;
-    }
+    return $filtered;
+  }
 
-    /**
-     * Find matching keys between 2 lists.
-     *
-     * @param array|null $elements
-     * @param array $keys
-     * @return array
-     */
-    public static function findMatchingKeys (?array $elements, array $keys): array
-    {
-        $matching = [];
+  /**
+   * Find matching keys between 2 lists.
+   *
+   * @param array|null $elements
+   * @param array $keys
+   * @return array
+   */
+  public static function findMatchingKeys (?array $elements, array $keys): array
+  {
+    $matching = [];
 
-        if (!empty($elements)) {
-            foreach ($elements as $element) {
-                foreach ($keys as $key) {
-                    if (!empty($element) && array_key_exists($key, $element)) {
-                        $matching[] = $key;
-                    }
-                }
-            }
+    if (!empty($elements)) {
+      foreach ($elements as $element) {
+        foreach ($keys as $key) {
+          if (!empty($element) && array_key_exists($key, $element)) {
+            $matching[] = $key;
+          }
         }
-
-        return $matching;
+      }
     }
 
-    /**
-     * @param $array
-     * @return array
-     * Note : simply return all values of a multi-dimensional array.
-     */
-    public static function getArrayValuesRecursive ($array)
-    {
-        $values = [];
-        foreach ($array as $value) {
-            if (is_array($value)) {
-                // If value is an array, merge its values recursively
-                $values = array_merge($values, self::getArrayValuesRecursive($value));
-            } else {
-                // If value is not an array, add it to the result
-                $values[] = $value;
-            }
-        }
-        return $values;
-    }
+    return $matching;
+  }
 
-    /**
-     * @param string $text
-     * @return string
-     * Note : This come from jwtToken, as it is completely private - it is cloned here for now.
-     */
-    public static function base64urlEncode (string $text): string
-    {
-        return str_replace(["+", "/", "="], ["A", "B", ""], base64_encode($text));
+  /**
+   * @param $array
+   * @return array
+   * Note : simply return all values of a multi-dimensional array.
+   */
+  public static function getArrayValuesRecursive ($array)
+  {
+    $values = [];
+    foreach ($array as $value) {
+      if (is_array($value)) {
+        // If value is an array, merge its values recursively
+        $values = array_merge($values, self::getArrayValuesRecursive($value));
+      } else {
+        // If value is not an array, add it to the result
+        $values[] = $value;
+      }
     }
+    return $values;
+  }
+
+  /**
+   * @param string $text
+   * @return string
+   * Note : This come from jwtToken, as it is completely private - it is cloned here for now.
+   */
+  public static function base64urlEncode (string $text): string
+  {
+    return str_replace(["+", "/", "="], ["A", "B", ""], base64_encode($text));
+  }
 }
\ No newline at end of file