code: public static String getNewIfcGloballyUniqueId(){
  		Guid guid = getGuidFromUncompressedString(UUID.randomUUID().toString());		
  		String shortString = getCompressedStringFromGuid(guid);
  		return shortString;
  	}
docs: Generates a new GUID and returns a compressed string representation as used for IfcGloballyUniqueId
  @return String with a length of 22 characters