code: @SuppressWarnings( { "UnusedDeclaration" } )
      public void setManifest( File manifestFile )
          throws ArchiverException
      {
          if ( !manifestFile.exists() )
          {
              throw new ArchiverException( "Manifest file: " + manifestFile + " does not exist." );
          }
  
          this.manifestFile = manifestFile;
      }
docs: The manifest file to use. This can be either the location of a manifest, or the name of a jar added through a
  fileset. If its the name of an added jar, the task expects the manifest to be in the jar at META-INF/MANIFEST.MF.
  
  @param manifestFile the manifest file to use.
  @throws org.codehaus.plexus.archiver.ArchiverException
  .