asyncLoweredHostFunction
fun asyncLoweredHostFunction(moduleName: String, symbolName: String, coreFunctionType: FunctionType, function: WitPackage.Function, handler: HostHandler): HostFunction
fun asyncLoweredHostFunction(moduleName: String, symbolName: String, coreFunctionType: FunctionType, function: WitPackage.Function, handler: HostHandler, asyncFutures: CanonicalFutureIntrinsics?): HostFunction