def __init__(self, groups: List[str], env=Environment(), **kwargs):
        """
        :param groups: names of processor groups to be applied
        :param env: Environment
        :param kwargs: additional keyword arguments for processors

        """
        available_plugins = plugin_manager.get_formatters_grouped()
        self.enabled_plugins = []
        for group in groups:
            for cls in available_plugins[group]:
                p = cls(env=env, **kwargs)
                if p.enabled:
                    self.enabled_plugins.append(p)

        :param groups: names of processor groups to be applied
        :param env: Environment
        :param kwargs: additional keyword arguments for processors

        
httpie/output/processing.py