Summary: This diff adds some models of `next` methods of linked list. * `android.app.Activity.getParent` * `androidx.fragment.app.Fragment.getParentFragment` * `com.facebook.graphql.model.GraphQLStory.getAttachedStory` * `com.intellij.psi.PsiElement.getParent` * `android.view.ViewGroup.getParent` * `android.view.ViewParent.getParent` Reviewed By: ezgicicek Differential Revision: D22283069 fbshipit-source-id: f628268e6