Executes the plugin.
Overrides ExecutableInterface::execute
public function execute($account = NULL) {
$rid = $this->configuration['rid'];
// Skip adding the role to the user if they already have it.
if ($account !== FALSE && !$account
->hasRole($rid)) {
// For efficiency manually save the original account before applying
// any changes.
$account->original = clone $account;
$account
->addRole($rid);
$account
->save();
}
}