Changes to Facebook Event Search API

the response property data/events/items/address became nullable for the status 200

the response property data/events/items/duration became nullable for the status 200

the response property data/events/items/durationSeconds became nullable for the status 200

the response property data/events/items/endDate became nullable for the status 200

the response property data/events/items/eventType became nullable for the status 200

the response property data/events/items/location/name became nullable for the status 200

the response property data/events/items/startDate became nullable for the status 200

the response property data/events/items/ticketsUrl became nullable for the status 200

the response property data/events/items/timezone became nullable for the status 200