Incorrect Bucket File download Api

[hadson19]

I've looked into the code Firebase Bucket Storage File (firebase-admin: "8.3.0") and found that when we call download - the content should be returned in any case..

  export declare type DownloadResponse = [Buffer];
  export declare type DownloadCallback = (err: RequestError | null, contents: Buffer) => void;

What do you think about this? Thanks.

[hadson19]

Should be fixed bu pull request https://github.com/soumak77/firebase-mock/pull/128/files