def METHOD_NAME(self) -> list:
    """
    implements /collections filtered on features
    @returns: `list` of filtered collections object
    """
    features_ = []
    collections_ = super().collections()
    for c_ in collections_['collections']:
        if 'itemType' in c_ and c_['itemType'].lower() == 'feature':
            features_.append(c_['id'])
    return features_