doGetLayout example

$component['region'] = $new_region;
          $this->setComponent($name, $component);
        }
      }
    }
    $this->setThirdPartySetting('field_layout', 'id', $layout_id);
    // Instantiate the plugin and consult it for the updated plugin     // configuration. Once layouts are no longer stored as third party settings,     // this will be handled by the code in     // \Drupal\Core\Config\Entity\ConfigEntityBase::set() that handles     // \Drupal\Core\Entity\EntityWithPluginCollectionInterface.     $layout_settings = $this->doGetLayout($layout_id, $layout_settings)->getConfiguration();
    $this->setThirdPartySetting('field_layout', 'settings', $layout_settings);
    return $this;
  }

  /** * Implements \Drupal\field_layout\Display\EntityDisplayWithLayoutInterface::setLayout(). */
  public function setLayout(LayoutInterface $layout) {
    $this->setLayoutId($layout->getPluginId(), $layout->getConfiguration());
    return $this;
  }