code: public InputStream openInputStream(final VirtualFile mountPoint, final VirtualFile target) throws IOException {
          return privileged ? doIoPrivileged(new PrivilegedExceptionAction<InputStream>() {
              public InputStream run() throws Exception {
                  return new FileInputStream(getFile(mountPoint, target));
              }
          }) : new FileInputStream(getFile(mountPoint, target));
      }
docs: {@inheritDoc}