@Override
    protected CompiledSelection compileSelection(List<SelectAttributeBuilder> selectAttributeBuilders,
                                                 List<ExpressionBuilder> groupByExpressionBuilder,
                                                 ExpressionBuilder havingExpressionBuilder,
                                                 List<OrderByAttributeBuilder> orderByAttributeBuilders,
                                                 Long limit, Long offset) {
        return null;
    }
Custom store for testing of in memory cache for store tables.
modules/siddhi-core/src/test/java/io/siddhi/core/query/table/util/TestStoreForCacheEnabledOptimisation.java