[SP03.1] Replace com.android.internal.util.Preconditions.checkNotNull

package android.app.usage;

import static com.android.internal.util.Preconditions.checkNotNull;

import android.annotation.Nullable;

import android.annotation.SystemService;

import android.annotation.TestApi;

import com.android.internal.annotations.VisibleForTesting;

import java.util.Objects;

/**

 * Provides access to network usage history and statistics. Usage data is collected in

 * discrete bins of time called 'Buckets'. See {@link NetworkStats.Bucket} for details.

    /** @hide */

    public void registerUsageCallback(NetworkTemplate template, int networkType,

            long thresholdBytes, UsageCallback callback, @Nullable Handler handler) {

        checkNotNull(callback, "UsageCallback cannot be null");

        Objects.requireNonNull(callback, "UsageCallback cannot be null");

        final Looper looper;

        if (handler == null) {