code: public long getLastModified(VirtualFile mountPoint, VirtualFile target) {
          final File file = getFile(mountPoint, target);
          return privileged ? doPrivileged(new PrivilegedAction<Long>() {
              public Long run() {
                  return Long.valueOf(file.lastModified());
              }
          }).longValue() : file.lastModified();
      }
docs: {@inheritDoc}