/**
 * Implements hook_{{ plugin_type }}_info().
 */
function {{ machine_name }}_{{ plugin_type }}_info() {
  return [
    'foo' => [
      'id' => 'foo',
      'label' => t('Foo'),
      'description' => t('Foo description.'),
    ],
    'bar' => [
      'id' => 'bar',
      'label' => t('Bar'),
      'description' => t('Bar description.'),
    ],
  ];
}