/**
  * @param array $data
  * @covers \jones\novaposhta\converters\XmlConverter::appendChildren
  * @dataProvider requestDataProvider
  */
 public function testAppendChildren(array $data)
 {
     $encoded = $this->converter->encode($data);
     $document = simplexml_load_string($encoded);
     static::assertNotEmpty((array) $document->methodProperties);
     static::assertNotEmpty((array) $document->methodProperties->FindByString);
     static::assertEquals('Kiev', (string) $document->methodProperties->FindByString);
 }