anchor.diff:    @javax.annotation.Nonnull
     protected String ensureProperty( @javax.annotation.Nullable final String prefix, @javax.annotation.Nonnull final String key )
     {
  +    return ensureProperty( prefix, key, null );
  +  }
  +
  +  @javax.annotation.Nonnull
  +  protected String ensureProperty( @javax.annotation.Nullable final String prefix, @javax.annotation.Nonnull final String key, @javax.annotation.Nullable final String defaultValue )
  +  {
       final String p = prefix == null ? "" : prefix + ".";
  -    final String v = System.getProperties().getProperty( p + key, null );
  +    final String v = System.getProperties().getProperty( p + key, defaultValue );
       if( null == v && null != prefix )
       {
         return ensureProperty( null, key );
  
positive.code:     glassfish.createCustomResource( <%= repository.ee.qualified_jndi_resource_constants_name %>.<%= repository.ee.custom_jndi_resources["#{remote_client.jndi_config_base}/client"] %>, getKeycloakClient( "<%= Reality::Naming.underscore(remote_client.name) %>" ) );
      glassfish.createCustomResource( <%= repository.ee.qualified_jndi_resource_constants_name %>.<%= repository.ee.custom_jndi_resources["#{remote_client.jndi_config_base}/username"] %>, getKeycloakServiceUsername( "<%= Reality::Naming.underscore(remote_client.name) %>" ) );
      glassfish.createCustomResource( <%= repository.ee.qualified_jndi_resource_constants_name %>.<%= repository.ee.custom_jndi_resources["#{remote_client.jndi_config_base}/password"] %>, getKeycloakServicePassword( "<%= Reality::Naming.underscore(remote_client.name) %>" ) );
  <% end -%>
      // Keycloak Configuration Ende
  <% end -%>
  
negative.code:   }
  
    @javax.annotation.Nonnull
    protected String getKeycloakSecret( @javax.annotation.Nullable final String prefix )
    {
      return ensureProperty( prefix, "keycloak.secret", "-" );
    }
  
    @javax.annotation.Nonnull
    protected String getKeycloakServiceUsername( @javax.annotation.Nullable final String prefix )
    {
      return ensureProperty( prefix, "keycloak.service_username" );
  