class PreviewChannelHelper {

    public void deletePreviewProgram(long programId) {
        mContext.getContentResolver().delete(
                TvContractCompat.buildPreviewProgramUri(programId), null, null);
    }

    public  PreviewChannelHelper(Context context);
    public  PreviewChannelHelper(Context context, int urlConnectionTimeoutMillis,
            int urlReadTimeoutMillis);

}