def getPluginClass(plugin_name):
# First, load plugin classes, to know what we are talking about.
loadPlugins()
# Backward compatibility.
plugin_name = Options.getPluginNameConsideringRenames(plugin_name)
if plugin_name not in plugin_name2plugin_classes:
plugins_logger.sysexit("Error, unknown plug-in '%s' referenced." %
plugin_name)
return plugin_name2plugin_classes[plugin_name][0]
