Youri van Koppen
--- a/core/modules/user/config/schema/user.schema.yml
+++ b/core/modules/user/config/schema/user.schema.yml
    label:
      type: required_label
      label: 'Label'
+    description:
--- a/core/modules/user/src/Entity/Role.php
+++ b/core/modules/user/src/Entity/Role.php
   */
  protected $label;

+  /**
+   * A brief description of this role.
+   *
+   * @var string
+   */
+  protected $description;
-  protected $description;
+  protected string $description;
--- a/core/modules/user/src/Entity/Role.php
+++ b/core/modules/user/src/Entity/Role.php
    return $this->permissions;
  }

+  /**
+   * {@inheritdoc}
+   */
+  public function getDescription(): string {
+    if (!isset($this->description)) {
--- a/core/modules/user/src/RoleForm.php
+++ b/core/modules/user/src/RoleForm.php
      '#maxlength' => 64,
      '#description' => $this->t('The name for this role. Example: "Moderator", "Editorial board", "Site architect".'),
    ];
+    $form['description'] = [
+      '#type' => 'textarea',
+      '#title' => $this->t('Description'),
+      '#default_value' => $entity->getDescription(),
+      '#description' => $this->t('Displays on the %page page.', [
--- a/core/modules/user/src/RoleForm.php
+++ b/core/modules/user/src/RoleForm.php
   * {@inheritdoc}
   */
  public function form(array $form, FormStateInterface $form_state) {
+    /** @var \Drupal\role\RoleInterface $entity */
--- a/core/modules/user/src/RoleForm.php
+++ b/core/modules/user/src/RoleForm.php
   * {@inheritdoc}
   */
  public function save(array $form, FormStateInterface $form_state) {
+    /** @var \Drupal\role\RoleInterface $entity */