code: public static boolean fileMkDirs(final File target) {
          return AccessController.doPrivileged(new PrivilegedAction<Boolean>() {
              @Override
              public Boolean run() {
                  return target.mkdirs();
              }
  
          });
      }
docs: Calls {@link File#mkdirs()} on the specified <code>target</code> from
  within a {@link PrivilegedAction}.
  
  @param target The tarket to make a directory for
  @return <code>true</code> if this succeeded.