TestConfigurablePlugin.php

<?php

namespace Drupal\Tests\Core\Plugin\Fixtures;

use Drupal\Component\Plugin\ConfigurableInterface;
use Drupal\Component\Plugin\DependentPluginInterface;
use Drupal\Component\Plugin\PluginBase;
class TestConfigurablePlugin extends PluginBase implements ConfigurableInterface, DependentPluginInterface {
    
    /**
     * {@inheritdoc}
     */
    public function getConfiguration() {
        return $this->configuration;
    }
    
    /**
     * {@inheritdoc}
     */
    public function setConfiguration(array $configuration) {
        $this->configuration = $configuration;
    }
    
    /**
     * {@inheritdoc}
     */
    public function defaultConfiguration() {
        return [];
    }
    
    /**
     * {@inheritdoc}
     */
    public function calculateDependencies() {
        return [];
    }

}