Adds hassers for all types of data

Author: sagikazarmark

src/Message/InternalRequestInterface.php

@@ -19,11 +19,18 @@ interface InternalRequestInterface extends RequestInterface
     /**
      * Returns some data by name
      *
-     * @param string|null $name
+     * @param string $name
      *
      * @return mixed
      */
-    public function getData($name = null);
+    public function getData($name);
+
+    /**
+     * Returns all data
+     *
+     * @return array
+     */
+    public function getAllData();
 
     /**
      * Checks if the data exists
@@ -34,6 +41,13 @@ public function getData($name = null);
      */
     public function hasData($name);
 
+    /**
+     * Checks if any data exists
+     *
+     * @return boolean
+     */
+    public function hasAnyData();
+
     /**
      * Sets some data by name
      *
@@ -88,6 +102,13 @@ public function getFiles();
      */
     public function hasFile($name);
 
+    /**
+     * Checks if any file exists
+     *
+     * @return boolean
+     */
+    public function hasFiles();
+
     /**
      * Sets a file by name
      *