Merge "docs: Mention app query filters on Android 11" into rvc-dev am: ace19f5537

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13113598

Change-Id: I810cb264829917cc07af833dc4a1486ec4943574

core/java/android/content/pm/PackageManager.java

@@ -92,6 +92,11 @@ import java.util.Set;
  * packages that are currently installed on the device.
  *
  * You can find this class through {@link Context#getPackageManager}.
+ *
+ * <p class="note"><strong>Note: </strong>If your app targets Android 11 (API level 30) or
+ * higher, the methods in this class each return a filtered list of apps. Learn more about how to
+ * <a href="/training/basics/intents/package-visibility">manage package visibility</a>.
+ * </p>
  */
 public abstract class PackageManager {
     private static final String TAG = "PackageManager";