public static TikaConfig getDefaultConfig() {
        try {
            return new TikaConfig();
        } catch (IOException e) {
            throw new RuntimeException("Unable to read default configuration", e);
        } catch (TikaException e) {
            throw new RuntimeException("Unable to access default configuration", e);
        }
    }
Provides a default configuration (TikaConfig).  Currently creates a
new instance each time it's called; we may be able to have it
return a shared instance once it is completely immutable.

@return default configuration
tika-core/src/main/java/org/apache/tika/config/TikaConfig.java