Using all stocks from CAC 40 or DAX, FTSE, ...

When you want to trade on all stocks related to an index like CAC 40, DAX or FTSE, writing the Strategy @Instrument configuration can quickly become tiedous and error-prone.
In order to simplify this configuration, you can use 'groups' in this annotation as a replacement for 'stocks', and only declare that you are using all stocks in one or several particular groups (comma-separated if there are several).
You can use :

@Instruments(groups = { Group.STOCKS_DAX })

In place of :

@Instruments(stocks = { ADIDAS_AG, ALLIANZ_SE, BASF_SE, BAYER_AG, BEIERSDORF_AG, BMW_AG_ST, 
    COMMERZBANK_AG, DAIMLER_AG, DEUTSCHE_BANK_AG, DEUTSCHE_BOERSE_AG, DEUTSCHE_LUFTHANSA_AG, 
    DEUTSCHE_POST_AG, DEUTSCHE_TELEKOM_AG, EON_AG, FRESENIUS_MEDICAL_CARE_AG, FRESENIUS_SE_VZ, 
    HEIDELBERGCEMENT_AG, HENKEL_AG, INFINEON_TECHNOLOGIES_AG, K_S_AG, LINDE_AG, MAN_SE, 
    MERCK_KGAA, METRO_AG, MUENCHENER_RUECKVERSICHERUNGS_GESELLSCHAFT_AG, RWE_AG, 
    SAP_AG, SIEMENS_AG, THYSSENKRUPP, VOLKSWAGEN_AG})