format
  format(format = nil, *args)
  public
  Returns the contents of this Tms object as a formatted string, according to a format string like that passed to Kernel.format. In addition, #format accepts the following extensions:
%u  | 
 Replaced by the user CPU time, as reported by Tms#utime.  | 
%y  | 
 Replaced by the system CPU time, as reported by #stime (Mnemonic: y of “s*y*stem”)  | 
%U  | 
 Replaced by the children’s user CPU time, as reported by Tms#cutime  | 
%Y  | 
 Replaced by the children’s system CPU time, as reported by Tms#cstime  | 
%t  | 
 Replaced by the total CPU time, as reported by Tms#total  | 
%r  | 
 Replaced by the elapsed real time, as reported by Tms#real  | 
%n  | 
 Replaced by the label string, as reported by Tms#label (Mnemonic: n of “*n*ame”)  | 
If format is not given, FORMAT is used as default value, detailing the user, system and real elapsed time.

  
  