code: public static String defaultTostring(Object input, Object... appends) {
  		if (null == input) { return NULL_STR; }
  		StringBuilder bul = new StringBuilder(input.getClass().getName());
  		bul.append("@").append(Integer.toHexString(input.hashCode()));
  		for (Object a : appends) {
  			bul.append(null != a ? a.toString() : NULL_STR);
  		}
  		return bul.toString();
  	}
docs: Returns the default {@link Object#toString()} result
  
  @see Object#toString()
  @param input
  @return