title: Issue with consuming java web service in .net core
body: <p>I'm trying to import a WSDL definition from a web service made in Java (JAX-WS) for consume it in my net core 2.1 app. Following the steps to do this, I used the Connected Services and Microsoft WCF Web Service Reference Provider. Put the uri of service, listed the services available, changed the default namespace and done the others steps without any errors. At the end the tool created a proxy reference for the web service, but with no models. </p>
  
  <p>Bellow a code snippet of the request class and the interface generated.</p>
  
  <pre><code>    [System.Diagnostics.DebuggerStepThroughAttribute()]
      [System.CodeDom.Compiler.GeneratedCodeAttribute("dotnet-svcutil", "1.0.0.1")]
      [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]
      [System.ServiceModel.MessageContractAttribute(WrapperName="SERVICO_ENTRADA", WrapperNamespace="http://caixa.gov.br/sibar/manutencao_cobranca_bancaria/boleto/externo", IsWrapped=true)]
      public partial class INCLUI_BOLETORequest
      {
  
          public INCLUI_BOLETORequest()
          {
          }
      }
  
  
      [System.CodeDom.Compiler.GeneratedCodeAttribute("dotnet-svcutil", "1.0.0.1")]
      [System.ServiceModel.ServiceContractAttribute(Namespace="http://caixa.gov.br/sibar/manutencao_cobranca_bancaria/boleto/externo", ConfigurationName="GerencialISP.ServicosExternos.CobCaixa.manutencao_cobranca_bancaria")]
      public interface manutencao_cobranca_bancaria
      {
  
          [System.ServiceModel.OperationContractAttribute(Action="IncluiBoleto", ReplyAction="*")]
          System.Threading.Tasks.Task&lt;GerencialISP.ServicosExternos.CobCaixa.INCLUI_BOLETOResponse&gt; INCLUI_BOLETOAsync(GerencialISP.ServicosExternos.CobCaixa.INCLUI_BOLETORequest request);
  
      ...
  
      }
  </code></pre>
  
  <p>Here is the WSDL link: <a href="http://barramento.caixa.gov.br/sibar/ManutencaoCobrancaBancaria/Boleto/Externo?wsdl" rel="nofollow noreferrer">http://barramento.caixa.gov.br/sibar/ManutencaoCobrancaBancaria/Boleto/Externo?wsdl</a></p>
  
  <p>As you can see, all models in the imported schemas aren't available in the generated code. Tried with svcutil tool too without success.</p>
  
  <p>Doing something wrong? Exists a way to generate a valid proxy or I need to do it manually with web requests?</p>