Compiles and returns all parameters for all :py:class:`Task`.

        :return: a generator of tuples (TODO: we should make this more elegant)

def get_all_params(cls):
        """
        Compiles and returns all parameters for all :py:class:`Task`.

        :return: a generator of tuples (TODO: we should make this more elegant)
        """
        for task_name, task_cls in six.iteritems(cls._get_reg()):
            if task_cls == cls.AMBIGUOUS_CLASS:
                continue
            for param_name, param_obj in task_cls.get_params():
                yield task_name, (not task_cls.use_cmdline_section), param_name, param_obj