def get_session_var(
        self,
        variable_name: str,
        default: Optional[str],
    ) -> Optional[str]:
        """
        get a session variable from the context

        :param variable_name: the name of the variable
        :param default: the default value of the variable

        :return: the value of the variable
        """
        ...

        get a session variable from the context

        :param variable_name: the name of the variable
        :param default: the default value of the variable

        :return: the value of the variable
        
taskweaver/plugin/context.py