anchor.diff:    final Path filePath;
     
     /// Create a [_RequestBundle] object.
  -  _RequestBundle(this.hash, this.hashFilePath, this.filePath);
  +  _RequestBundle(this.fileHash, this.hashFilePath, this.filePath);
     
     /// Create link a link saved as [filePath] and links to [hashFilePath].
     Future createLink() {
  
positive.code:     }
      
      if (other is _RequestBundle && 
          hash == other.hash && 
          hashFilePath == other.hashFilePath &&
          filePath == filePath) {
        
  
negative.code: /**
   * Is only used to easier to collect a list of files there are needed to be 
   * downloaded from another computer. The file to be downloaded is represented 
   * by the [fileHash] value and when the file is downloaded it should be saved as 
   * [hashFilePath]. At last there should be created a link between [hashFilePath] 
   * and [filePath].
   */
  class _RequestBundle {
    /// Hash value to request.
    final String fileHash;
    
    /// Path the downloaded file should be saved.
    final Path hashFilePath;
  