MockComplexContextBlock.php

<?php

namespace Drupal\plugin_test\Plugin\plugin_test\mock_block;

use Drupal\Core\Plugin\ContextAwarePluginInterface;
use Drupal\Core\Plugin\ContextAwarePluginTrait;
use Drupal\Core\Plugin\PluginBase;

/**
 * Implementation of a complex context plugin used by Plugin API context tests.
 *
 * @see \Drupal\plugin_test\Plugin\MockBlockManager
 */
class MockComplexContextBlock extends PluginBase implements ContextAwarePluginInterface {
  use ContextAwarePluginTrait;
  public function getTitle() {
    $user = $this
      ->getContextValue('user');
    $node = $this
      ->getContextValue('node');
    return $user
      ->label() . ' -- ' . $node
      ->label();
  }

}