Fix:I have add sinch jar file into libs folder and as library in android studio but when I import sinch or related class its not show import option

Question

public class SinchService extends Service {

private static final String APP_KEY = "7b6f87ff-75ea-4-aae5192e52";
private static final String APP_SECRET = "";
private static final String ENVIRONMENT = "clientapi.sinch.com";

public static final String CALL_ID = "CALL_ID";
static final String TAG = SinchService.class.getSimpleName();

private SinchServiceInterface mSinchServiceInterface = new SinchServiceInterface();
private SinchClient mSinchClient;
private String mUserId;