How to use the loopback4-authentication.AuthErrorKeys.WrongPassword function in loopback4-authentication

async updatePassword(
    username: string,
    password: string,
    newPassword: string,
  ): Promise {
    const user = await super.findOne({where: {username}});
    const creds = user && (await this.credentials(user.id).get());
    if (!user || user.deleted || !creds || !creds.password) {
      throw new HttpErrors.Unauthorized(AuthenticateErrorKeys.UserDoesNotExist);
    } else if (!(await bcrypt.compare(password, creds.password))) {
      throw new HttpErrors.Unauthorized(AuthErrorKeys.WrongPassword);
    } else if (await bcrypt.compare(newPassword, creds.password)) {
      throw new HttpErrors.Unauthorized(
        'Password cannot be same as previous password!',
      );
    }
    await this.credentials(user.id).patch({
      password: await bcrypt.hash(newPassword, this.saltRounds),
    });
    return user;
  }
}