Enhance the shortcut manager javadoc.

import android.annotation.NonNull;

import android.annotation.Nullable;

import android.annotation.SdkConstant;

import android.annotation.SdkConstant.SdkConstantType;

import android.annotation.TestApi;

import android.annotation.UserIdInt;

import android.app.Activity;

import android.content.Context;

import android.content.Intent;

import android.content.IntentSender;

import android.os.Binder;

import android.os.Parcel;

import android.os.Parcelable;

import android.os.Build.VERSION_CODES;

import android.os.RemoteException;

import android.os.ServiceManager;

import android.os.UserHandle;

import com.android.internal.annotations.VisibleForTesting;

import com.android.internal.util.Preconditions;

import java.util.List;

 *   <p><b>Note:</b> If the user doesn't allow the shortcut to be pinned to the launcher, the

 *   pinning process fails, and the {@link Intent} object that is passed into this

 *   {@link android.app.PendingIntent} object isn't executed.

 *   <div class="note"><p><b>Note:</b> Due to background execution limits introduced in Android

 *   {@link VERSION_CODES#O}, it's best to use a

 *   <a href="{@docRoot}guide/components/broadcasts.html#manifest-declared_receivers">

 *   manifest-declared receiver</a> to receive a callback.

 *   <p>Also, to prevent other apps from invoking the receiver, add the attribute assignment

 *   <code>android:exported="false"</code> to the receiver's manifest entry.</p></div>

 * </ul>

 *

 * The following code snippet shows how to pin a single shortcut that already exists and is enabled:

 *    // needs to be notified that the user allowed the shortcut to be pinned.

 *    // Use a boolean value, such as "appNeedsNotifying", to define this behavior.

 *    if (appNeedsNotifying) {

 *        // We assume here that the app has implemented a method called

 *        // createShortcutResultIntent() that returns a broadcast intent.

 *        Intent pinnedShortcutCallbackIntent =

 *                createShortcutResultIntent(pinShortcutInfo);

 *        // We assume here the app has a manifest-declared receiver "MyReceiver".

 *        Intent pinnedShortcutCallbackIntent = new Intent(context, MyReceiver.class);

 *

 *        // Configure the intent so that your app's broadcast receiver gets

 *        // the callback successfully.

    /**

     * Return {@code TRUE} if the app is running on a device whose default launcher supports

     * {@link #requestPinShortcut(ShortcutInfo, IntentSender)}.

     *

     * <p><b>Note:</b> The return value may change in subsequent calls, if the user changes

     * the default launcher app.

     */

    public boolean isRequestPinShortcutSupported() {

        try {

     *     set.

     * @param resultIntent If not null, this intent will be sent when the shortcut is pinned.

     *    Use {@link android.app.PendingIntent#getIntentSender()} to create an {@link IntentSender}.

     *    To avoid background execution limits, use an unexported, manifest-declared receiver.

     *    For more details, see the overview documentation for the {@link ShortcutManager} class.

     *

     * @return {@code TRUE} if the launcher supports this feature.  Note the API will return without

     *    waiting for the user to respond, so getting {@code TRUE} from this API does *not* mean