get() public method

If param is set, only specified setting is return. 'index.' is added in front of $setting.
public get ( string $setting = '' ) : array | string | null
$setting string OPTIONAL Setting name to return
return array | string | null Settings data
 protected function verifySettings(Settings $settings)
 {
     $this->assertEquals('2', $settings->get('number_of_shards'));
     $this->assertEquals('0', $settings->get('number_of_replicas'));
 }