def func(self):

        # Validate the switch.
        if self.switches:
            # This command only accepts
            # one switch so we're only going to consider the first switch that was
            # passed.

            # is the tolower necessary? is startswith case sensitive?
            first = self.switches[0].lower() or ''

            # Try to match the passed switch against the list of allowed switches.
            switch = filter(lambda x: x.startswith(first), self.switchtab)

            # If switch is None, then there were no matches.
            if not switch:
                self.caller.msg("Unknown switch, bro! Try one of %s." % utils.itemize(self.switchtab, prep="and"))
                return
            elif len(switch) > 1:
                # If the length of switch (a list) is > 1 then more than one switch was matched.
                self.caller.msg("Sorry bro, '%s' matches multiple switches: %s. Please be more specific." % (first, utils.itemize(switch)))
                return
            # There was precisely one match.
            switch = switch[0]
        else:
            # No switch was passed so default to /list.
            switch = 'list'

        if _DEBUG:
            self.caller.msg("DEBUG: switch=%s" % switch)

        # All switches except for LIST require permission checks.
        if switch <> 'list':
            if not self.access(self.caller, "control") or not self.access(self.caller, "edit"):
                self.caller.msg("Sorry bro, you don't have permission to modify that room.")
                return

        # Lookup the name of the handler.
        method = getattr(self, "do_%s" % switch)

        if _DEBUG:
            self.caller.msg("DEBUG: handler=%s" % method.__name__)

        # Call the handler. No need to pass any args here since they'll be accessible in self.args.
        if method and callable(method):
            # Call the do_x method. This does the actual work.
            method()
        else:
            self.caller.msg("Sorry bro, there's no handler defined for the '%s' switch." % switch)