def run_server_obj(server_obj, method_name, arg=None):
	"""
	   Executes a method (`method_name`) from the given object (`server_obj`)
	"""
	if server_obj and hasattr(server_obj, method_name):
		if arg:
			return getattr(server_obj, method_name)(arg)
		else:
			return getattr(server_obj, method_name)()
	else:
		raise Exception, 'No method %s' % method_name