Fix wrong return types

Author: BurntimeX

wcfsetup/install/files/lib/system/form/builder/container/wysiwyg/WysiwygFormContainer.class.php

@@ -197,7 +197,7 @@ public function addSettingsNodes(array $settingsNodes)
      * @return  WysiwygFormContainer            this form container
      * @throws  \BadMethodCallException         if the attachment form field has already been initialized
      */
-    public function attachmentData(?string $objectType = null, int $parentObjectID = 0, ?int $objectID = null): self
+    public function attachmentData(?string $objectType = null, int $parentObjectID = 0, ?int $objectID = null): static
     {
         if ($this->attachmentField !== null) {
             throw new \BadMethodCallException("The attachment form field '{$this->getId()}' has already been initialized. Use the atatchment form field directly to manipulate attachment data.");

wcfsetup/install/files/lib/system/form/builder/field/MultilineItemListFormField.class.php

@@ -32,7 +32,7 @@ class MultilineItemListFormField extends ItemListFormField implements INullableF
     /**
      * @see TFilterableSelectionFormField::filterable()
      */
-    public function filterable(bool $filterable = true): self
+    public function filterable(bool $filterable = true): static
     {
         $this->filterable = $filterable;
 

wcfsetup/install/files/lib/system/form/builder/field/PasswordFormField.class.php

@@ -118,7 +118,7 @@ public function validate()
      *
      * @since 6.2
      */
-    public function passwordStrengthMeter(bool $passwordStrengthMeter = true): self
+    public function passwordStrengthMeter(bool $passwordStrengthMeter = true): static
     {
         $this->strengthMeter = $passwordStrengthMeter;
 
@@ -143,7 +143,7 @@ protected function getValidAutoCompleteTokens(): array
         return ['new-password', 'current-password'];
     }
 
-    public function addMeterRelatedField(IFormField $input): self
+    public function addMeterRelatedField(IFormField $input): static
     {
         $this->relatedFields[] = $input;
 
@@ -153,7 +153,7 @@ public function addMeterRelatedField(IFormField $input): self
     /**
      * @since 6.2
      */
-    public function addMeterRelatedFieldId(string $fieldId): self
+    public function addMeterRelatedFieldId(string $fieldId): static
     {
         $this->relatedFieldsId[] = $fieldId;