Returns the list of available voucher bundles.
/voucher
This method is only accessible using a Hotelier API account.
[ { "id":INTEGER, // Bundle id "priority":INTEGER, // Priority "name":STRING, // Name "description":STRING, // A short description "code_count":INTEGER, // Number of voucher codes in the bundle "code_limit":INTEGER, // Maximum number of times a code can been applied (empty if not defined) "date_from":ISO 8601, // Voucher is valid from this date "date_to":ISO 8601, // Voucher is valid until this date "special_offer":BOOLEAN, // Is true if voucher unlocks a special offer "package":BOOLEAN, "req_only":BOOLEAN, "last_flag":BOOLEAN, "active":BOOLEAN } ]