update init file with docstring
update init file with docstring


Former-commit-id: 6be913c85061c8685974b678890d6ec41c0c746a
Former-commit-id: 9e0caf9420cc56c00bebbb8534cff14a5bd03f0b
dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy