<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def register_tc_plugins(self, plugin_name, plugin_class):
 """ Loads a plugin as a dictionary and attaches needed parts to correct areas for testing parts. :param plugin_name: Name of the plugins :param plugin_class: PluginBase :return: Nothing """

        if plugin_name in self.registered_plugins:
            raise PluginException("Plugin {} already registered! Duplicate "
                                  "plugins?".format(plugin_name))
        self.logger.debug("Registering plugin %s", plugin_name)
        plugin_class.init(bench=self.bench)
        if plugin_class.get_bench_api() is not None:
            register_func = self.plugin_types[PluginTypes.BENCH]
            register_func(plugin_name, plugin_class)
        if plugin_class.get_parsers() is not None:
            register_func = self.plugin_types[PluginTypes.PARSER]
            register_func(plugin_name, plugin_class)
        if plugin_class.get_external_services() is not None:
            register_func = self.plugin_types[PluginTypes.EXTSERVICE]
            register_func(plugin_name, plugin_class)

        self.registered_plugins.append(plugin_name)