How to use the pgspecial.help.commands.helpcommands function in pgspecial

def show_command_help_listing(self):
        table = chunks(sorted(helpcommands.keys()), 6)
        return [(None, table, [], None)]

def show_command_help(self, pattern, **_):
        command = pattern.strip().upper()
        message = ""

        if not command:
            return self.show_command_help_listing()

        if command in helpcommands:
            helpcommand = helpcommands[command]

            if "description" in helpcommand:
                message += helpcommand["description"]
            if "synopsis" in helpcommand:
                message += "\nSyntax:\n"
                message += helpcommand["synopsis"]
        else:
            message = "No help available for \"%s\"" % pattern
            message += "\nTry \h with no arguments to see available help."

        return [(None, None, None, message)]