code: def execute(self, correlation_id, command, args):
          
          # Get command and throw error if it doesn't exist
          cref = self.find_command(command)
          if cref == None:
              raise BadRequestException(
                  correlation_id,
                  "CMD_NOT_FOUND",
                  "Requested command does not exist"
              ).with_details("command", command)
  
          # Generate correlationId if it doesn't exist
          # Use short ids for now
          if correlation_id == None:
             correlation_id = IdGenerator.next_short()
          
          # Validate command arguments before execution and throw the 1st found error
          results = cref.validate(args)
          ValidationException.throw_exception_if_needed(correlation_id, results, False)
                  
          # Execute the command.
          return cref.execute(correlation_id, args)
docs: Executes a ICommand command specificed by its name.
          
          :param correlation_id: (optional) transaction id to trace execution through call chain.
  
          :param command: the name of that command that is to be executed.
  
          :param args: the parameters (arguments) to pass to the command for execution.
          
          :return: the execution result.
          
          :raises: ValidationException: when execution fails for any reason.