Modify the list of available views style plugins.
This hook may be used to modify plugin properties after they have been specified by other modules.
array $plugins: An array of all the existing plugin definitions, passed by reference.
\Drupal\views\Plugin\ViewsPluginManager
function hook_views_plugins_style_alter(array &$plugins) {
// Change the theme hook of a plugin.
$plugins['html_list']['theme'] = 'custom_views_view_list';
}