All classes that implement ViewsDuplicateBuilderPluginInterface in Views Templates 8
- class \Drupal\calendar\Plugin\ViewsTemplateBuilder\ViewsFieldTemplate
- class \Drupal\views_templates\Plugin\ViewsDuplicateBuilderBase implements ContainerFactoryPluginInterface, ViewsDuplicateBuilderPluginInterface
- class \Drupal\views_templates_builder_test\Plugin\ViewsTemplateBuilder\ViewDuplicatorTest