'Loads the FillAllHelper plugins'

def _load_plugins(self):

    self.COMPLETION_TYPES = {}
    for plugin in get_plugins_by_type(FillAllHelper):
        name = _classname_to_internal_name(plugin.__name__)
        if name.endswith('_fill_all_helper'):
            name = name[:(-16)]
            self.COMPLETION_TYPES[name] = plugin()
    self.COMPLETION_TYPE_NAMES = list(self.COMPLETION_TYPES.keys())
