Correctly deal with non-null ness of PrintJobId.

import android.annotation.NonNull;

import android.os.Parcel;

import android.os.Parcelable;

import android.text.TextUtils;

import com.android.internal.util.Preconditions;

import java.util.UUID;

 * This class represents the id of a print job.

 */

public final class PrintJobId implements Parcelable {

    private final String mValue;

    private final @NonNull String mValue;

    /**

     * Creates a new instance.

     *

     * @hide

     */

    public PrintJobId(String value) {

    public PrintJobId(@NonNull String value) {

        mValue = value;

    }

    public int hashCode() {

        final int prime = 31;

        int result = 1;

        result = prime * result + ((mValue != null) ? mValue.hashCode() : 0);

        result = prime * result + mValue.hashCode();

        return result;

    }

            return false;

        }

        PrintJobId other = (PrintJobId) obj;

        if (!TextUtils.equals(mValue, other.mValue)) {

        if (!mValue.equals(other.mValue)) {

            return false;

        }

        return true;

     *

     * @hide

     */

    public static PrintJobId unflattenFromString(String string) {

    public static @NonNull PrintJobId unflattenFromString(@NonNull String string) {

        return new PrintJobId(string);

    }

            new Parcelable.Creator<PrintJobId>() {

        @Override

        public PrintJobId createFromParcel(Parcel parcel) {

            return new PrintJobId(parcel.readString());

            return new PrintJobId(Preconditions.checkNotNull(parcel.readString()));

        }

        @Override