How to use the yq.loader.OrderedLoader.add_constructor function in yq

pairs.append(("__yq_tag_{}__".format(hash_key(key)), v_node.tag))
            if isinstance(v_node, yaml.nodes.ScalarNode) and v_node.style:
                pairs.append(("__yq_style_{}__".format(hash_key(key)), v_node.style))
            elif isinstance(v_node, (yaml.nodes.SequenceNode, yaml.nodes.MappingNode)) and v_node.flow_style is True:
                pairs.append(("__yq_style_{}__".format(hash_key(key)), "flow"))
        return OrderedDict(pairs)

    def parse_unknown_tags(loader, tag_suffix, node):
        if isinstance(node, yaml.nodes.ScalarNode):
            return loader.construct_scalar(node)
        elif isinstance(node, yaml.nodes.SequenceNode):
            return construct_sequence(loader, node)
        elif isinstance(node, yaml.nodes.MappingNode):
            return construct_mapping(loader, node)

    OrderedLoader.add_constructor(yaml.resolver.BaseResolver.DEFAULT_MAPPING_TAG, construct_mapping)
    OrderedLoader.add_constructor(yaml.resolver.BaseResolver.DEFAULT_SEQUENCE_TAG, construct_sequence)
    OrderedLoader.add_multi_constructor('', parse_unknown_tags)
    return OrderedLoader

if isinstance(v_node, yaml.nodes.ScalarNode) and v_node.style:
                pairs.append(("__yq_style_{}__".format(hash_key(key)), v_node.style))
            elif isinstance(v_node, (yaml.nodes.SequenceNode, yaml.nodes.MappingNode)) and v_node.flow_style is True:
                pairs.append(("__yq_style_{}__".format(hash_key(key)), "flow"))
        return OrderedDict(pairs)

    def parse_unknown_tags(loader, tag_suffix, node):
        if isinstance(node, yaml.nodes.ScalarNode):
            return loader.construct_scalar(node)
        elif isinstance(node, yaml.nodes.SequenceNode):
            return construct_sequence(loader, node)
        elif isinstance(node, yaml.nodes.MappingNode):
            return construct_mapping(loader, node)

    OrderedLoader.add_constructor(yaml.resolver.BaseResolver.DEFAULT_MAPPING_TAG, construct_mapping)
    OrderedLoader.add_constructor(yaml.resolver.BaseResolver.DEFAULT_SEQUENCE_TAG, construct_sequence)
    OrderedLoader.add_multi_constructor('', parse_unknown_tags)
    return OrderedLoader