CreateBookingRequest
public CreateBookingRequest CreateBookingRequest( @Json(name = "start_time") String startTime, @Json(name = "end_time") String endTime, @Json(name = "participants") List<BookingParticipant> participants, @Json(name = "guest") BookingGuest guest, @Json(name = "timezone") String timezone, @Json(name = "email_language") EmailLanguage emailLanguage, @Json(name = "additional_guests") List<BookingGuest> additionalGuests, @Json(name = "additional_fields") Map<String, String> additionalFields)