如何使用第三方库中的 picker_utils (API12) PickerUtil 类

ohpm i @pura/picker_utils

import { CameraOptions, PickerUtil } from '@pura/picker_utils';import { image } from '@kit.ImageKit';import { camera, cameraPicker } from '@kit.CameraKit';import { BusinessError } from '@kit.BasicServicesKit';

ons: CameraOptions = {  mediaTypes: [cameraPicker.PickerMediaType.PHOTO],  cameraPosition: camera.CameraPosition.CAMERA_POSITION_BACK}PickerUtil.camera(options).then((result) => {  this.uriStr = `调用相机，返回uri：\n${result.resultUri}`;}).catch((err: BusinessError) => {  this.uriStr = `调用相机，异常：\n${JSON.stringify(err)}`;});

PickerUtil.selectPhoto().then((uris) => {  this.uriStr = `调用相册，返回uris：\n${uris.join('\n')}`;}).catch((err: BusinessError) => {  this.uriStr = `调用相册，异常：\n${JSON.stringify(err)}`;})

let options: picker.DocumentSelectOptions = {  maxSelectNumber: 9, //选择媒体文件数量的最大值,默认9。  selectMode: picker.DocumentSelectMode.FILE, //支持选择的资源类型,默认文件}PickerUtil.selectDocument(options).then((uris) => {  this.uriStr = `调用文件管理，返回uris：\n${uris.join('\n')}`}).catch((err: BusinessError) => {  this.uriStr = `调用文件管理，异常：\n${JSON.stringify(err)}`});