How to use the yq.loader.hash_key function in yq

def represent_dict_order(dumper, data):
        pairs, custom_styles, custom_tags = [], {}, {}
        for k, v in data.items():
            if use_annotations and isinstance(k, str):
                value_annotation = yaml_value_annotation_re.match(k)
                if value_annotation and value_annotation.group("type") == "style":
                    custom_styles[value_annotation.group("key")] = v
                    continue
                elif value_annotation and value_annotation.group("type") == "tag":
                    custom_tags[value_annotation.group("key")] = v
                    continue
            pairs.append((k, v))
        mapping = dumper.represent_mapping("tag:yaml.org,2002:map", pairs)
        if use_annotations:
            for k, v in mapping.value:
                hashed_key = hash_key(k.value)
                if hashed_key in custom_styles:
                    if isinstance(v, yaml.nodes.ScalarNode):
                        v.style = custom_styles[hashed_key]
                    elif custom_styles[hashed_key] == "flow":
                        v.flow_style = True
                if hashed_key in custom_tags:
                    v.tag = custom_tags[hashed_key]
        return mapping