public static File generateTempFile(final Class<?> clazz, final String fileName, final String fileNameSuffix) throws IOException {
        final File path = makeTestDataPath(clazz, "temp");
        if (!path.exists())
            path.mkdirs();
        return File.createTempFile(fileName, fileNameSuffix, path);
    }
Creates a {@link File} reference in the path returned from {@link #makeTestDataPath} in a subdirectory
called {@code temp}.
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/util/TestSupport.java