无法在Swift中调用Obj-c中定义的函数

I'm trying to use a third-party library written in objective-c in my project written with Swift. I have copied the file into the project and built the bridge file, and is able to reference the class in the library and use the properties. But I'm not able to call the instance function in the library, XCode just complaining I'm trying to use a third-party library written