PluginHelper.php

<?php

namespace Drupal\Component\Plugin;


/**
 * A helper class to determine if a plugin is configurable.
 *
 * @todo Deprecate this class. https://www.drupal.org/node/3105685
 */
class PluginHelper {
    
    /**
     * Determines if a plugin is configurable.
     *
     * @param mixed $plugin
     *   The plugin to check.
     *
     * @return bool
     *   A boolean indicating whether the plugin is configurable.
     */
    public static function isConfigurable($plugin) {
        return $plugin instanceof ConfigurableInterface;
    }

}