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Modifying store configurations

Adding an index on the TradeAttributes store in the PnL schema. Setting a global config for the chunksize, overridden by the TradeAttributes configuration:

IMutableStore config = new MutableStoreConfig();
    config
        .withIndexOn("InstrumentClass", "AsOfDate");
    config
        .withChunkSize(2048);

IMutableStore globalConfig = new MutableStoreConfig();
    globalConfig
        .withChunkSize(1024);

configurator.addConfiguration("PnL", "TradeAttributes", config);
configurator.addConfiguration(ConfigurationConstants.ALL_STORES, globalConfig);