ConfigEntityBase::set

public ConfigEntityBase::set($property_name, $value)

public function set($property_name, $value) {
  if ($this instanceof EntityWithPluginCollectionInterface) {
    $plugin_collections = $this->getPluginCollections();
    if (isset($plugin_collections[$property_name])) {
      // If external code updates the settings, pass it along to the plugin.
      $plugin_collections[$property_name]->setConfiguration($value);
    }
  }

  $this->{$property_name} = $value;

  return $this;
}