@WebService(name = "WorkflowService", targetNamespace = "http://office.salavatmed.ru")
public interface IWorkflowWS {
   
    @WebMethod(operationName = "testEchoMethod", action = "urn:saveDocument")
    @WebResult(name = "saveDocument")    
    public void saveDocument(@WebParam(name = "documentDto") DocumentDto documentDto);
}

public class DocumentDto implements Serializable {

    private static final long serialVersionUID = 43L;
    private Long uid;
    private int incomingNumber;
    private String documentPrefix;
    private Date documentDate;
    private String description;
    private Long documentTypeUid;
    private Long workflowUserUid;
    private long contactUserUid;
    private long controlUserUid;
    private List<DocumentFileDto> documents;
    private String externalCompany;
    private String[] userUids;
.... геттеры и сеттеры
}