How to use the react-native-onesignal.setEmail function in react-native-onesignal

it('must throw error when call setEmail without args', () => {
      // $ExpectError
      OneSignal.setEmail();
    });
  });

it("must throw error when call setEmail without args", () => {
      // $ExpectError
      OneSignal.setEmail();
    });
  });

it("must call setEmail with emailAuth code", () => {
      OneSignal.setEmail("email", "emailAuthCode", (error: ?Error) => {});
      OneSignal.setEmail("email", "emailAuthCode");
    });

it('must call setEmail without emailAuth code', () => {
      OneSignal.setEmail('email', (error: ?Error) => {});
      OneSignal.setEmail('email');
    });

it('must call setEmail with emailAuth code', () => {
      OneSignal.setEmail('email', 'emailAuthCode', (error: ?Error) => {});
      OneSignal.setEmail('email', 'emailAuthCode');
    });

it("must call setEmail without emailAuth code", () => {
      OneSignal.setEmail("email", (error: ?Error) => {});
      OneSignal.setEmail("email");
    });