Added return type attribute for PHP 8.1 (related to #162)

Author: uestla

src/LeanMapper/Reflection/EntityReflection.php

@@ -114,6 +114,7 @@ public function getAliases(): Aliases
     /**
      * Gets parent entity's reflection
      */
+    #[\ReturnTypeWillChange]
     public function getParentClass(): ?self
     {
         return ($reflection = parent::getParentClass()) ? new self($reflection->getName(), $this->mapper, $this->entityReflectionProvider) : null;
@@ -125,6 +126,7 @@ public function getParentClass(): ?self
      *
      * @return string|false
      */
+    #[\ReturnTypeWillChange]
     public function getDocComment()
     {
         if ($this->docComment === null) {

src/LeanMapper/Result.php

@@ -616,6 +616,7 @@ public function __wakeup()
     /**
      * @return mixed
      */
+    #[\ReturnTypeWillChange]
     public function current()
     {
         $key = current($this->keys);
@@ -632,6 +633,7 @@ public function next(): void
     /**
      * @return mixed
      */
+    #[\ReturnTypeWillChange]
     public function key()
     {
         return current($this->keys);

src/LeanMapper/ResultProxy.php

@@ -55,6 +55,7 @@ public function setReferencingResult(Result $referencingResult, string $table, ?
     /**
      * @return mixed
      */
+    #[\ReturnTypeWillChange]
     public function current()
     {
         return $this->result->current();
@@ -70,6 +71,7 @@ public function next(): void
     /**
      * @return mixed
      */
+    #[\ReturnTypeWillChange]
     public function key()
     {
         return $this->result->key();