Provides a data model for managing the local clock, setting the local clock time and time zone, and for retrieving local clock information.
module: extreme-clock
   +--rw clock-set-datetime
   |  +---x clock    
   |     +---w input     
   |        +---w set    ietfyang:date-and-time
   +--rw clock-sa
      +--rw clock
         +--rw timezone?   common-def:timezone
 
	 module: extreme-common-def | +--rw clock-server:clock
rpcs:
  +---x show-clock    
     +--ro output    
        +--ro clock-time
           +--ro current-time?   ietfyang:date-and-time
           +--ro timezone?       string