trait ImageFieldCreationTrait

trait ImageFieldCreationTrait {
    
    /**
     * Create a new image field.
     *
     * @param string $field_name
     *   The name of the new field (all lowercase). The Field UI 'field_' prefix
     *   is not added to the field name.
     * @param string $entity_type
     *   The entity type that this field will be added to.
     * @param string $bundle
     *   The bundle this field will be added to.
     * @param array $storage_settings
     *   (optional) A list of field storage settings that will be added to the
     *   defaults.
     * @param array $field_settings
     *   (optional) A list of instance settings that will be added to the instance
     *   defaults.
     * @param array $widget_settings
     *   (optional) Widget settings to be added to the widget defaults.
     * @param array $formatter_settings
     *   (optional) Formatter settings to be added to the formatter defaults.
     * @param string $description
     *   (optional) A description for the field. Defaults to ''.
     */
    protected function createImageField($field_name, $entity_type, $bundle, $storage_settings = [], $field_settings = [], $widget_settings = [], $formatter_settings = [], $description = '') {
        FieldStorageConfig::create([
            'field_name' => $field_name,
            'entity_type' => $entity_type,
            'type' => 'image',
            'settings' => $storage_settings,
            'cardinality' => !empty($storage_settings['cardinality']) ? $storage_settings['cardinality'] : 1,
        ])->save();
        $field_config = FieldConfig::create([
            'field_name' => $field_name,
            'label' => $field_name,
            'entity_type' => $entity_type,
            'bundle' => $bundle,
            'required' => !empty($field_settings['required']),
            'settings' => $field_settings,
            'description' => $description,
        ]);
        $field_config->save();
        
        /** @var \Drupal\Core\Entity\EntityDisplayRepositoryInterface $display_repository */
        $display_repository = \Drupal::service('entity_display.repository');
        $display_repository->getFormDisplay($entity_type, $bundle)
            ->setComponent($field_name, [
            'type' => 'image_image',
            'settings' => $widget_settings,
        ])
            ->save();
        $display_repository->getViewDisplay($entity_type, $bundle)
            ->setComponent($field_name, [
            'type' => 'image',
            'settings' => $formatter_settings,
        ])
            ->save();
        return $field_config;
    }

}