# Craft 4 Plugin Changes

## Composer Requirements
#### Before
 ```json
"require": {
    "craftcms/cms": "^3.0.0"
},
```
#### After
 ```json
"require": {
    "craftcms/cms": "^4.0.0-alpha"
},
 ```
 
## Method Return Types
#### Before
 ```php
 public method init()
```
#### After
 ```php
 public method init(): void
 ```

## Registering User Permissions
#### Before
 ```php
$event->permissions['Blitz'] = [
    'blitz:clear' => [
        'label' => Craft::t('blitz', 'Clear cache')
    ],
];
```
#### After
 ```php
$event->permissions[] = [
    'heading' => 'Blitz',
    'permissions' => [
        'blitz:clear' => [
            'label' => Craft::t('blitz', 'Clear cache')
        ],
    ],
];
 ```
 
## Editable Table Fields
### Before
 ```twig
{{ forms.editableTableField({
    label: "Included URI Patterns"|t('blitz'),
    name: 'settings[includedUriPatterns]',
    id: 'includedUriPatterns',
    cols: cols,
    rows: settings.includedUriPatterns,
    addRowLabel: "Add a URI pattern"|t('blitz'),
}) }}
```
### After
```twig
{{ forms.editableTableField({
    label: "Included URI Patterns"|t('blitz'),
    name: 'settings[includedUriPatterns]',
    id: 'includedUriPatterns',
    cols: cols,
    rows: settings.includedUriPatterns,
    addRowLabel: "Add a URI pattern"|t('blitz'),
    allowAdd: true,
    allowDelete: true,
    allowReorder: true,
}) }}
```