code: def perform_command(self):
          
          # if no actual arguments, print help
          if len(self.actual_arguments) < 1:
              return self.print_help(short=True)
  
          # check if we have a recognized tool switch
          for cls, switches in self.TOOLS:
              if self.has_option(switches):
                  arguments = [a for a in sys.argv if a not in switches]
                  return cls(invoke=(self.invoke + u" %s" % switches[0])).run(arguments=arguments)
  
          # check if we have -h, --help, or --version
          if u"-h" in self.actual_arguments:
              return self.print_help(short=True)
          if u"--help" in self.actual_arguments:
              return self.print_help(short=False)
          if u"--version" in self.actual_arguments:
              return self.print_name_version()
  
          # default to run ExecuteTaskCLI
          return ExecuteTaskCLI(invoke=self.invoke).run(arguments=sys.argv)
docs: Perform command and return the appropriate exit code.
  
          :rtype: int