code: public static String generatePreviousPreviousFileName() {
  		StringBuffer name = new StringBuffer();
  		name.append("Audit_Log-").append(AuditUtil.dateToString(new Date(), "yyyy-MM-dd"))
  				.append(CoreConstants.AUDIT_EXTENTION);
  		return name.toString();
  	}
docs: Generate file name.
  
  @return the string