How to use the @alfresco/js-api.PeopleApi function in @alfresco/js-api

*
 * The Alfresco Example Content Application is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see .
 */

import { PersonModel, Person } from './people-api-models';
import { RepoApi } from '../repo-api';
import { PeopleApi as AdfPeopleApi} from '@alfresco/js-api';

export class PeopleApi extends RepoApi {
    peopleApi = new AdfPeopleApi(this.alfrescoJsApi);

    constructor(username?, password?) {
        super(username, password);
    }

    async createUser(user: PersonModel) {
        const person = new Person(user);
        await this.apiAuth();
        return await this.peopleApi.createPerson(person);
    }

    async getUser(username: string) {
        await this.apiAuth();
        return await this.peopleApi.getPerson(username);
    }