[DI] fix return type declarations

Author: derrabus

Definition.php

@@ -796,7 +796,7 @@ public function setConfigurator($configurator)
     /**
      * Gets the configurator to call after the service is fully initialized.
      *
-     * @return callable|null The PHP callable to call
+     * @return callable|array|null
      */
     public function getConfigurator()
     {

Extension/ExtensionInterface.php

@@ -37,7 +37,7 @@ public function getNamespace();
     /**
      * Returns the base path for the XSD files.
      *
-     * @return string The XSD base path
+     * @return string|false
      */
     public function getXsdValidationBasePath();
 

Loader/XmlFileLoader.php

@@ -710,7 +710,7 @@ private function loadFromExtensions(\DOMDocument $xml)
      *
      * @param \DOMElement $element A \DOMElement instance
      *
-     * @return array A PHP array
+     * @return mixed
      */
     public static function convertDomElementToArray(\DOMElement $element)
     {

ParameterBag/ParameterBag.php

@@ -195,7 +195,7 @@ public function resolveValue($value, array $resolving = [])
      * @param string $value     The string to resolve
      * @param array  $resolving An array of keys that are being resolved (used internally to detect circular references)
      *
-     * @return string The resolved string
+     * @return mixed The resolved string
      *
      * @throws ParameterNotFoundException          if a placeholder references a parameter that does not exist
      * @throws ParameterCircularReferenceException if a circular reference if detected