Change https://r.android.com/1667508 adds nullability annotations to
the core platform APIs which broke this code with the error:
javadoc: error - In doclet class com.google.doclava.Doclava, method
start has thrown an exception
java.lang.reflect.InvocationTargetException
com.sun.tools.javac.code.Symbol$CompletionFailure: class file for
androidx.annotation.RecentlyNonNull not found
Bug: 183938110
Test: m checkbuild
Change-Id: I83e3071f851720a9f719cb226f0e84fd731a8f37
3412561439