owncloud / core

	}

	/** {@inheritdoc} */

	public function saveVersion($internalPath) {

		if ($this->objectStore instanceof IVersionedObjectStorage) {

			$stat = $this->stat($internalPath);

			// There are cases in the current implementation where saveVersion

			// is called before the file was even written.

			// There is nothing to be done in this case.

			// We return true to not trigger the fallback implementation

			if ($stat === false) {

				return true;

			}

			return $this->objectStore->saveVersion($this->getURN($stat['fileid']));

		}

		return parent::saveVersion($internalPath);

	}

	/** {@inheritdoc} */

	public function getContentOfVersion($internalPath, $versionId) {

		if ($this->objectStore instanceof IVersionedObjectStorage) {

			$stat = $this->stat($internalPath);

			if ($stat === false) {

				throw new NotFoundException();

			}

			return $this->objectStore->getContentOfVersion($this->getURN($stat['fileid']), $versionId);

		}

		return parent::getContentOfVersion($internalPath, $versionId);

	}

	/** {@inheritdoc} */

	public function restoreVersion($internalPath, $versionId) {

	}

	/** {@inheritdoc} */

	public function restoreVersion($internalPath, $versionId) {

		if ($this->objectStore instanceof IVersionedObjectStorage) {

			$stat = $this->stat($internalPath);

			if ($stat === false) {

				throw new NotFoundException();

			}

			return $this->objectStore->restoreVersion($this->getURN($stat['fileid']), $versionId);

		}

		return parent::restoreVersion($internalPath, $versionId);

	}

	/** {@inheritdoc} */

	public function copyFromStorage(\OCP\Files\Storage $sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime = false) {