Initial Drupal 11 with DDEV setup

vendor/chi-teck/drupal-code-generator/templates/Plugin/_entity-reference-selection/entity-reference-selection.twig

@@ -0,0 +1,65 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }}\Plugin\EntityReferenceSelection;
+
+{% apply sort_namespaces %}
+use Drupal\Core\Entity\Attribute\EntityReferenceSelection;
+use Drupal\Core\Entity\Query\QueryInterface;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+{% if configurable %}
+use Drupal\Core\Form\FormStateInterface;
+{% endif %}
+use {{ base_class_full }}{% if base_class == class %} as Base{{ base_class }}{% endif %};
+{% endapply %}
+
+/**
+ * @todo Add plugin description here.
+ */
+#[EntityReferenceSelection(
+  id: '{{ plugin_id }}',
+  label: new TranslatableMarkup('{{ plugin_label }}'),
+  group: '{{ plugin_id }}',
+  weight: 1,
+  entity_types: ['{{ entity_type }}'],
+)]
+final class {{ class }} extends {{  base_class == class ? 'Base' ~ base_class : base_class }} {
+
+{% if configurable %}
+  /**
+   * {@inheritdoc}
+   */
+  public function defaultConfiguration(): array {
+    $default_configuration = [
+      'foo' => 'bar',
+    ];
+    return $default_configuration + parent::defaultConfiguration();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildConfigurationForm(array $form, FormStateInterface $form_state): array {
+    $form = parent::buildConfigurationForm($form, $form_state);
+
+    $form['foo'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Foo'),
+      '#default_value' => $this->configuration['foo'],
+    ];
+
+    return $form;
+  }
+
+{% endif %}
+  /**
+   * {@inheritdoc}
+   */
+  protected function buildEntityQuery($match = NULL, $match_operator = 'CONTAINS'): QueryInterface {
+    $query = parent::buildEntityQuery($match, $match_operator);
+    // @todo Modify the query here.
+    return $query;
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Plugin/_entity-reference-selection/schema.twig

@@ -0,0 +1,10 @@
+entity_reference_selection.{{ plugin_id }}:
+{# User selection plugin provides has some additional options. #}
+  type: entity_reference_selection.default{{ entity_type == 'user' ? ':user' }}
+  label: '{{ plugin_label }} handler settings'
+{% if configurable %}
+  mapping:
+    foo:
+      type: string
+      label: Foo
+{% endif %}