disposable.dispose();
            } catch (final Throwable t) {
                t.printStackTrace(); // must not use Logger.
            }
        }
        disposables.clear();
        Introspector.flushCaches();
    }

  Status CopyFile(const std::string& src, const std::string& target,
                  TransactionToken* token) override;
  std::string TranslateName(const std::string& name) const override;
  void FlushCaches(TransactionToken* token) override;
  Status SetOption(const std::string& name,
                   const std::vector<string>& values) override;
  Status SetOption(const std::string& name,

  std::string ret(p);
  // Since `p` is allocated by plugin, free it using plugin's method.
  plugin_memory_free_(p);
  return ret;
}

void ModularFileSystem::FlushCaches(TransactionToken* token) {
  if (ops_->flush_caches != nullptr) ops_->flush_caches(filesystem_.get());
}

Status ModularFileSystem::SetOption(const std::string& name,

  Stat(filesystem, path, &stat, status);
  return stat.length;
}

static char* TranslateName(const TF_Filesystem* filesystem, const char* uri) {
  return strdup(uri);
}

static void FlushCaches(const TF_Filesystem* filesystem) {
  auto gcs_file = static_cast<GCSFile*>(filesystem->plugin_filesystem);
  absl::ReaderMutexLock l(&gcs_file->block_cache_lock);
  gcs_file->file_block_cache->Flush();

*   Google Cloud Storage (GCS):
    *   Add client-side throttle.
    *   Add a `FlushCaches()` method to the FileSystem interface, with an
        implementation for GcsFileSystem.
*   Other:
    *   Add `tf.contrib.distributions.Kumaraswamy`.
    *   `RetryingFileSystem::FlushCaches()` calls the base FileSystem's
        `FlushCaches()`.
    *   Add `auto_correlation` to distributions.