Changes to Get Multivariate Event Collections

added the required property multivariate_contracts/items/price_level_structure to the response with the 200 status

added the required property multivariate_contracts/items/price_ranges to the response with the 200 status

added the optional property multivariate_contracts/items/exchange_index to the response with the 200 status

removed the optional property service from the response with the 400 status

removed the optional property service from the response with the 500 status

api tag multivariate added

api tag collection removed

the response property multivariate_contracts/items/associated_events/items/size_max became nullable for the status 200

the response property multivariate_contracts/items/associated_events/items/size_min became nullable for the status 200

added the new optional query request parameter associated_event_ticker

added the new optional query request parameter cursor

added the new optional query request parameter limit

added the new optional query request parameter series_ticker

added the new optional query request parameter status

added the non-success response with the status 400

added the non-success response with the status 500

the response property multivariate_contracts became required for the status 200

the response property multivariate_contracts/items/associated_event_tickers became required for the status 200

the response property multivariate_contracts/items/associated_events became required for the status 200

the response property multivariate_contracts/items/associated_events/items/active_quoters became required for the status 200

the response property multivariate_contracts/items/associated_events/items/is_yes_only became required for the status 200

the response property multivariate_contracts/items/associated_events/items/ticker became required for the status 200

the response property multivariate_contracts/items/close_date became required for the status 200

the response property multivariate_contracts/items/collection_ticker became required for the status 200

the response property multivariate_contracts/items/description became required for the status 200

the response property multivariate_contracts/items/functional_description became required for the status 200

the response property multivariate_contracts/items/is_all_yes became required for the status 200

the response property multivariate_contracts/items/is_ordered became required for the status 200

the response property multivariate_contracts/items/is_single_market_per_event became required for the status 200

the response property multivariate_contracts/items/open_date became required for the status 200

the response property multivariate_contracts/items/series_ticker became required for the status 200

the response property multivariate_contracts/items/size_max became required for the status 200

the response property multivariate_contracts/items/size_min became required for the status 200

the response property multivariate_contracts/items/title became required for the status 200

added the optional property multivariate_contracts/items/associated_events to the response with the 200 status