Fix return types for PHP 8.1

Author: derrabus

PropertyPath.php

@@ -154,6 +154,7 @@ public function getParent()
      *
      * @return PropertyPathIteratorInterface
      */
+    #[\ReturnTypeWillChange]
     public function getIterator()
     {
         return new PropertyPathIterator($this);

Tests/Fixtures/NonTraversableArrayObject.php

@@ -29,12 +29,17 @@ public function offsetExists($offset): bool
         return \array_key_exists($offset, $this->array);
     }
 
+    /**
+     * @param mixed $offset
+     * @return mixed
+     */
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         return $this->array[$offset];
     }
 
-    public function offsetSet($offset, $value)
+    public function offsetSet($offset, $value): void
     {
         if (null === $offset) {
             $this->array[] = $value;
@@ -43,7 +48,7 @@ public function offsetSet($offset, $value)
         }
     }
 
-    public function offsetUnset($offset)
+    public function offsetUnset($offset): void
     {
         unset($this->array[$offset]);
     }
@@ -68,7 +73,7 @@ public function __unserialize(array $data): void
         $this->array = $data;
     }
 
-    public function unserialize($serialized)
+    public function unserialize($serialized): void
     {
         $this->__unserialize((array) unserialize((string) $serialized));
     }

Tests/Fixtures/TraversableArrayObject.php

@@ -29,12 +29,17 @@ public function offsetExists($offset): bool
         return \array_key_exists($offset, $this->array);
     }
 
+    /**
+     * @param mixed $offset
+     * @return mixed
+     */
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         return $this->array[$offset];
     }
 
-    public function offsetSet($offset, $value)
+    public function offsetSet($offset, $value): void
     {
         if (null === $offset) {
             $this->array[] = $value;
@@ -43,7 +48,7 @@ public function offsetSet($offset, $value)
         }
     }
 
-    public function offsetUnset($offset)
+    public function offsetUnset($offset): void
     {
         unset($this->array[$offset]);
     }