[CS] Enforces null type hint on last position in phpDocs

Author: carusogabriel

ExecutionContext.php

@@ -41,7 +41,7 @@ class ExecutionContext implements ExecutionContextInterface
      *
      * @param GlobalExecutionContextInterface $globalContext     The global context storing node-independent state
      * @param TranslatorInterface             $translator        The translator for translating violation messages
-     * @param null|string                     $translationDomain The domain of the validation messages
+     * @param string|null                     $translationDomain The domain of the validation messages
      * @param MetadataInterface               $metadata          The metadata of the validated node
      * @param mixed                           $value             The value of the validated node
      * @param string                          $group             The current validation group
@@ -255,7 +255,7 @@ private function executeConstraintValidators($value, array $constraints)
     /**
      * Returns an array of group names.
      *
-     * @param null|string|string[] $groups The groups to resolve. If a single string is
+     * @param string|string[]|null $groups The groups to resolve. If a single string is
      *                                     passed, it is converted to an array. If null
      *                                     is passed, an array containing the current
      *                                     group of the context is returned.

ExecutionContextInterface.php

@@ -134,7 +134,7 @@ public function addViolationAt($subPath, $message, array $parameters = array(),
      *
      * @param mixed                $value    The value to validate
      * @param string               $subPath  The path to append to the context's property path
-     * @param null|string|string[] $groups   The groups to validate in. If you don't pass any
+     * @param string|string[]|null $groups   The groups to validate in. If you don't pass any
      *                                       groups here, the current group of the context
      *                                       will be used.
      * @param bool                 $traverse Whether to traverse the value if it is an array
@@ -166,7 +166,7 @@ public function validate($value, $subPath = '', $groups = null, $traverse = fals
      * @param mixed                   $value       The value to validate
      * @param Constraint|Constraint[] $constraints The constraint(s) to validate against
      * @param string                  $subPath     The path to append to the context's property path
-     * @param null|string|string[]    $groups      The groups to validate in. If you don't pass any
+     * @param string|string[]|null    $groups      The groups to validate in. If you don't pass any
      *                                             groups here, the current group of the context
      *                                             will be used.
      *

Validator.php

@@ -197,7 +197,7 @@ private function createVisitor($root)
     }
 
     /**
-     * @param null|string|string[] $groups
+     * @param string|string[]|null $groups
      *
      * @return string[]
      */

ValidatorBuilder.php

@@ -70,7 +70,7 @@ class ValidatorBuilder implements ValidatorBuilderInterface
     private $translator;
 
     /**
-     * @var null|string
+     * @var string|null
      */
     private $translationDomain;