code: private void unpack() throws InstallationFailedException {
  		System.out.println("Preparing FEDORA_HOME...");
  
  		if (!_installDir.exists() && !_installDir.mkdirs()) {
  			throw new InstallationFailedException(
  					"Unable to create FEDORA_HOME: "
  							+ _installDir.getAbsolutePath());
  		}
  		if (!_installDir.isDirectory()) {
  			throw new InstallationFailedException(_installDir.getAbsolutePath()
  					+ " is not a directory");
  		}
  		try {
  			Zip.unzip(_dist.get(Distribution.FEDORA_HOME), _installDir);
  			setScriptsExecutable(new File(_installDir, "client"
  					+ File.separator + "bin"));
  
  			File serverDir = new File(_installDir, "server");
  			if (_clientOnlyInstall) {
  				FileUtils.delete(serverDir);
  			} else {
  				setScriptsExecutable(new File(serverDir, "bin"));
  			}
  		} catch (IOException e) {
  			throw new InstallationFailedException(e.getMessage(), e);
  		}
  	}
docs: Unpacks the contents of the FEDORA_HOME directory from the Distribution.
  
  @throws InstallationFailedException