package androidx.lifecycle {

  public class MediatorLiveData<T> extends androidx.lifecycle.MutableLiveData {
    ctor public MediatorLiveData();
    method public <S> void addSource(androidx.lifecycle.LiveData<S>, androidx.lifecycle.Observer<? super S>);
    method public <S> void removeSource(androidx.lifecycle.LiveData<S>);
  }

  public class Transformations {
    method public static <X, Y> androidx.lifecycle.LiveData<Y> map(androidx.lifecycle.LiveData<X>, androidx.arch.core.util.Function<X, Y>);
    method public static <X, Y> androidx.lifecycle.LiveData<Y> switchMap(androidx.lifecycle.LiveData<X>, androidx.arch.core.util.Function<X, androidx.lifecycle.LiveData<Y>>);
  }

}