@class NSSet, NSString; @interface HMDModernTransportMessageContextOptions : NSObject @property (readonly) NSSet *transports; @property (readonly) double timeoutOverride; @property (readonly) double timeToLive; @property (readonly) BOOL expectsMultipleResponses; @property (readonly, getter=isTrackingDeviceReachability) BOOL trackingDeviceReachability; @property (readonly) NSString *requestStartTimeHeaderKey; @property (readonly) NSString *timeToLiveHeaderKey; + (id)newWithBuilder:(id /* block */)a0; - (id)initWithBuilder:(id)a0; - (void).cxx_destruct; @end