Constructs a Drupal\Component\Plugin\PluginBase object.
array $configuration: A configuration array containing information about the plugin instance.
string $plugin_id: The plugin_id for the plugin instance.
array $plugin_definition: The plugin implementation definition.
public function __construct(array $configuration, $plugin_id, array $plugin_definition) {
$this->configuration = $configuration;
$this->pluginId = $plugin_id;
$this->pluginDefinition = $plugin_definition;
}