Merge branch '5.4' into 6.0

* 5.4:
  [Console] Restore psr/log >= 3.0 conflict
  [Security] Make the abstract Voter class implement CacheableVoterInterface
  Add generic types to traversable implementations
  [Security] Fix TypeError message
  [Security] Fix deprecation layer
  [FrameworkBundle] Add completion for workflow:dump
  Fix cancel button
  Fix misleading error on missing provider with authenticator manager
  Don't limit retries of toolbar loading

PropertyPath.php

@@ -19,6 +19,8 @@
  * Default implementation of {@link PropertyPathInterface}.
  *
  * @author Bernhard Schussek <[email protected]>
+ *
+ * @implements \IteratorAggregate<int, string>
  */
 class PropertyPath implements \IteratorAggregate, PropertyPathInterface
 {
@@ -30,7 +32,7 @@ class PropertyPath implements \IteratorAggregate, PropertyPathInterface
     /**
      * The elements of the property path.
      *
-     * @var array
+     * @var string[]
      */
     private $elements = [];
 

PropertyPathInterface.php

@@ -15,6 +15,8 @@
  * A sequence of property names or array indices.
  *
  * @author Bernhard Schussek <[email protected]>
+ *
+ * @extends \Traversable<int, string>
  */
 interface PropertyPathInterface extends \Traversable
 {
@@ -45,7 +47,7 @@ public function getParent();
     /**
      * Returns the elements of the property path as array.
      *
-     * @return array
+     * @return string[]
      */
     public function getElements();
 

PropertyPathIteratorInterface.php

@@ -13,8 +13,10 @@
 
 /**
  * @author Bernhard Schussek <[email protected]>
+ *
+ * @extends \SeekableIterator<int, string>
  */
-interface PropertyPathIteratorInterface extends \Iterator, \SeekableIterator
+interface PropertyPathIteratorInterface extends \SeekableIterator
 {
     /**
      * Returns whether the current element in the property path is an array