java - Unnecessary Namespace in Jackson XML 2.6.1 + Woodstox 4.4.1

Question

I'm trying to parse my object to XML using jackson-dataformat-xml and, when i set the root namespace and parse the file, all properties of my object in the XML gives a empty namespace xmlns="". On jackson's github docs, is advise to use woodstox instead stax XML implementation to solve this but, the behavior still exists.

This is my pojo:

@JacksonXmlRootElement(namespace = "https://www.google.com.br")
public class Cliente implements Serializable {
 // Omitted
}

And my parse code:

Cliente cliente = new Cliente();
cliente.setId(new Long(1));
cliente.setNome("Tiago Cassio".toUpperCase());
cliente.setSobrenome("da Conceicao".toUpperCase());
Endereco endereco = new Endereco();
endereco.setId(new Long(1));
endereco.setLogradouro("blablabla");
endereco.setNumero("999");
endereco.setCep("99999");
endereco.setBairro("blablabla");
cliente.setEndereco(endereco);
ObjectMapper mapper = new XmlMapper();
System.out.println(mapper.writeValueAsString(cliente));

This is the XML generated:

<Cliente xmlns="https://www.google.com.br">
    <id xmlns="">1</id>
    <nome xmlns="">TIAGO CASSIO</nome>
    <sobrenome xmlns="">DA CONCEICAO</sobrenome>
    <endereco xmlns="">
        <id>1</id>
        <logradouro>blablabla</logradouro>
        <numero>999</numero>
        <cep>99999</cep>
        <bairro>blablabla</bairro>
    </endereco>
</Cliente>

Any idea where is the problem? My project is under a Spring boot version 1.3.0.M5. Thanks for all.