GET /_ml/calendars
curl \
-X GET http://api.example.com/_ml/calendars \
-H "Content-Type: application/json" \
-d '{"page":{"from":42.0,"size":42.0}}'
curl \
-X GET http://api.example.com/_ml/calendars \
-H "Content-Type: application/json" \
-d '{"page":{"from":42.0,"size":42.0}}'