如何将Resource资源对象转成string类型

import { resourceManager } from '@kit.LocalizationKit'; 
import { BusinessError } from '@kit.BasicServicesKit'; 
 
try { 
  let systemResourceManager = resourceManager.getSystemResourceManager(); 
  systemResourceManager.getStringValue($r('sys.string.ohos_lab_vibrate').id).then((value: string) => { 
    let str = value; 
  }).catch((error: BusinessError) => { 
    console.error("systemResourceManager getStringValue promise error is " + error); 
  }); 
} catch (error) { 
  let code = (error as BusinessError).code; 
  let message = (error as BusinessError).message; 
  console.error(`systemResourceManager getStringValue failed, error code: ${code}, message: ${message}.`); 
}
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