diff --git a/src/Collection.php b/src/Collection.php
index 027eb30..b15f3c0 100644
--- a/src/Collection.php
+++ b/src/Collection.php
@@ -7,12 +7,8 @@ namespace ctiso;
  */
 class Collection implements \ArrayAccess
 {
-    /**
-     * Holds collective request data
-     *
-     * @var array
-     */
-    protected $data = array();
+    /** @var array */
+    protected $data = [];
 
     /**
      * Преобразование массива в коллекцию
@@ -34,8 +30,7 @@ class Collection implements \ArrayAccess
     }
 
     /**
-     * Store "request data" in GPC order.
-     *
+
      * @param string $key
      * @param mixed  $value
      *
@@ -50,7 +45,6 @@ class Collection implements \ArrayAccess
      * Read stored "request data" by referencing a key.
      *
      * @param string $key
-     *
      * @return mixed
      */
     public function get($key, $default = null)
@@ -58,12 +52,22 @@ class Collection implements \ArrayAccess
         return isset($this->data[$key]) && $this->data[$key] != '' ? $this->data[$key] : $default;
     }
 
+    /**
+     * @param string $key
+     * @param int    $default
+     * @return int
+     */
     public function getInt($key, $default = 0)
     {
         return (int)$this->get($key, $default);
     }
 
-    public function getString($key, $default = '')
+    /**
+     * @param string $key
+     * @param string $default
+     * @return string
+     */
+    public function getString(string $key, string $default = ''): string
     {
         return (string)$this->get($key, $default);
     }
diff --git a/src/HttpRequest.php b/src/HttpRequest.php
index 35b6529..b3fb8a3 100644
--- a/src/HttpRequest.php
+++ b/src/HttpRequest.php
@@ -48,7 +48,7 @@ class HttpRequest extends Collection
     }
 
     /**
-     * @param T $key
+     * @param string $key
      * @return mixed
      */
     function get($key, $default = null)
@@ -56,6 +56,11 @@ class HttpRequest extends Collection
         return parent::get('data')->get($key, $default);
     }
 
+    function getString(string $key, string $default = ''): string
+    {
+        return parent::get('data')->getString($key, $default);
+    }
+
     function session(?Session $value = null)
     {
         if ($value) {