// Config
LayerAssembly configLayer = appAss.layer( "config" );
ModuleAssembly configModule = configLayer.module( "config" );
{
configModule.services( OrgJsonValueSerializationService.class ).
taggedWith( ValueSerialization.Formats.JSON );
configModule.services( MemoryEntityStoreService.class ).
visibleIn( Visibility.module );
// Use a PreferenceEntityStore instead if you want the configuration to be persistent
// new PreferenceEntityStoreAssembler( Visibility.module ).assemble( configModule );