anchor.diff:      use reader = new StreamReader(stream)
       reader.ReadToEnd()
       
  -/// Unzips a single file from the archive with the given fileName.
  +/// Unzips a single file from the archive with the given file name.
   /// ## Parameters
   ///  - `predicate` - The predictae for the searched file in the archive.
  -///  - `zipFileName` - The FileName of the zip file.
  +///  - `zipFileName` - The file name of the zip file.
   let UnzipFirstMatchingFileInMemory predicate (zipFileName:string) =
       use zf = new ZipFile(zipFileName)
   
  
positive.code: /// Creates a zip file with the given files.
  /// ## Parameters
  ///  - `workingDir` - The relative dir of the zip files. Use this parameter to influence directory structure within zip file.
  ///  - `fileName` - The fileName of the resulting zip file.
  ///  - `files` - A sequence with files to zip.
  let Zip workingDir fileName = CreateZip workingDir fileName "" DefaultZipLevel false
    
  /// Creates a zip file with the given file.
  /// ## Parameters
  ///  - `fileName` - The fileName of the resulting zip file.
  ///  - `targetFileName` - The file to zip.
  let ZipFile fileName targetFileName =
      let fi = fileInfo targetFileName    
      CreateZip (fi.Directory.FullName) fileName "" DefaultZipLevel false [fi.FullName]
  
  /// Unzips a file with the given fileName.
  /// ## Parameters
  ///  - `target` - The target directory.
  ///  - `fileName` - The fileName of the zip file.
  let Unzip target fileName =  
      let zip = new FastZip()
      zip.ExtractZip (fileName, target, "")
  
  /// Unzips a single file from the archive with the given fileName.
  /// ## Parameters
  ///  - `fileToUnzip` - The file inside the archive.
  ///  - `zipFileName` - The FileName of the zip file.
  let UnzipSingleFileInMemory fileToUnzip (zipFileName:string) =
      use zf = new ZipFile(zipFileName)
      let ze = zf.GetEntry fileToUnzip
  
negative.code: open System
  
  /// The default zip level
  let internal DefaultZipLevel = 7
  
  /// Creates a zip file with the given files
  /// ## Parameters
  