How to use the @aws-amplify/auth.Auth.verifiedContact function in @aws-amplify/auth

checkContact(user) {
    if (!Auth || typeof Auth.verifiedContact !== 'function') {
      throw new Error('No Auth module found, please ensure @aws-amplify/auth is imported');
    }
    Auth.verifiedContact(user).then(data => {
      if (!isEmpty(data.verified)) {
        this.handleAuthStateChange(AuthState.SignedIn, user);
      } else {
        user = Object.assign(user, data);
        this.handleAuthStateChange(AuthState.VerifyContact, user);
      }
    });
  }

async checkContact(user) {
    if (!Auth || typeof Auth.verifiedContact !== 'function') {
      throw new Error(NO_AUTH_MODULE_FOUND);
    }
    try {
      const data = await Auth.verifiedContact(user);
      if (!isEmpty(data.verified)) {
        this.handleAuthStateChange(AuthState.SignedIn, user);
      } else {
        user = Object.assign(user, data);
        this.handleAuthStateChange(AuthState.VerifyContact, user);
      }
    } catch (error) {
      logger.error(error);
      throw new Error(error);
    }
  }

checkContact(user) {
    if (!Auth || typeof Auth.verifiedContact !== 'function') {
      throw new Error('No Auth module found, please ensure @aws-amplify/auth is imported');
    }
    Auth.verifiedContact(user).then(data => {
      if (!isEmpty(data.verified)) {
        this.handleAuthStateChange(AuthState.SignedIn, user);
      } else {
        user = Object.assign(user, data);
        this.handleAuthStateChange(AuthState.VerifyContact, user);
      }
    });
  }