HarmonyOS image.createPixelMap使用问题

import {BusinessError} from '@ohos.base'; 
async function Demo() { 
  const color : ArrayBuffer = new ArrayBuffer(96);  //96为需要创建的像素buffer大小，取值为：height * width *4 
  let opts : image.InitializationOptions = { editable: true, pixelFormat: 9, size: { height: 4, width: 6 } } 
  image.createPixelMap(color, opts).then((pixelMap : image.PixelMap) => { 
    console.log('Succeeded in creating pixelmap.'); 
  }).catch((error : BusinessError) => { 
    console.error('Failed to create pixelmap.'); 
  }) 
}