ZipFile zipped = new ZipFile(file);
if (zipped.isValidZipFile()) {
File tempDir = Files.createTempDir();
try {
LOGGER.info("Extracting: %s to %s", file.getAbsoluteFile(), tempDir.getAbsolutePath());
zipped.extractAll(tempDir.getAbsolutePath());
File owlFile = findOwlFile(tempDir);
importFile(owlFile, documentIRI, authorizations);
} finally {
FileUtils.deleteDirectory(tempDir);