访问Android Studio库中抽象类中的方法

I created an library in Android Studio (aar) and have successfully imported it into another application I have created. In the library, I have a base abstract class which I extend from in order to make the class that I want to use in my new application. In my application, I am successful in calling methods in the library's child class but it doesn't seem to have access to the methods in the base abstract class.I created an library in Android Studio (aar) an