protected override void ConfigureModuleCatalog(IModuleCatalog moduleCatalog)
        {
            moduleCatalog.AddModule<Mudule.MuduleAClass>();
        }

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="modules" type="Prism.Modularity.ModulesConfigurationSection, Prism.Wpf" />
  </configSections>
  <startup>
  </startup>
  <modules>
    <module assemblyFile="Mudule.dll" moduleType="Mudule.MuduleAClass, Mudule" moduleName="MuduleAClass" startupLoaded="True" />
  </modules>
</configuration>

 protected override IModuleCatalog CreateModuleCatalog()
        {
            return new ConfigurationModuleCatalog();
        }