code: public static ContentInfo findExtensionMatch(String name) {
  		name = name.toLowerCase();
  
  		// look up the whole name first
  		ContentType type = ContentType.fromFileExtension(name);
  		if (type != ContentType.OTHER) {
  			return new ContentInfo(type);
  		}
  
  		// now find the .ext part, if any
  		int index = name.lastIndexOf('.');
  		if (index < 0 || index == name.length() - 1) {
  			return null;
  		}
  
  		type = ContentType.fromFileExtension(name.substring(index + 1));
  		if (type == ContentType.OTHER) {
  			return null;
  		} else {
  			return new ContentInfo(type);
  		}
  	}
docs: Return the content type if the extension from the file-name matches our internal list. This can either be just
  the extension part or it will look for the last period and take the string after that as the extension.
  
  @return The matching content-info or null if no matches.