getPreconfiguredOptions example

public function getUiDefinitions() {
    $definitions = $this->getDefinitions();

    // Filter out definitions that can not be configured in Field UI.     $definitions = array_filter($definitions, function D$definition) {
      return empty($definition['no_ui']);
    });

    // Add preconfigured definitions.     foreach ($definitions as $id => $definition) {
      if (is_subclass_of($definition['class'], '\Drupal\Core\Field\PreconfiguredFieldUiOptionsInterface')) {
        foreach ($this->getPreconfiguredOptions($definition['id']) as $key => $option) {
          $definitions["field_ui:$id:$key"] = array_intersect_key(
            $option,
            ['label' => 0, 'category' => 1]
          ) + $definition;
        }
      }
    }

    return $definitions;
  }

  

  protected function getNewFieldDefaults(string $field_name, string $preset_key): array {
    $field_type_definition = $this->fieldTypePluginManager->getDefinition($field_name);
    $options = $this->fieldTypePluginManager->getPreconfiguredOptions($field_type_definition['id']);
    $field_options = $options[$preset_key] ?? [];

    $default_options = [];
    // Merge in preconfigured field storage options.     if (isset($field_options['field_storage_config'])) {
      foreach (['cardinality', 'settings'] as $key) {
        if (isset($field_options['field_storage_config'][$key])) {
          $default_options['field_storage_config'][$key] = $field_options['field_storage_config'][$key];
        }
      }
    }