add instance aggregation
add instance aggregation


Former-commit-id: f5cb9e7af3ab483dd37a48ed1148ed97d849d407
Former-commit-id: dd8c691bfc004851e2612e1cb44d7ce4df9f28a4
dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy