How to use the biblib.util.jsonbson.dumps_bson function in biblib

def test_search_mongo():
    mongo_query = {"$or": [{"title": {"$options": "i", "$regex": "Cheyenne"}}, {"title": {"$options": "i", "$regex": "technique"}}]}
    mongo_query = {"$and": [{"$or": [{"title": {"$options": "i", "$regex": "Cheyenne"}}, {"title": {"$options": "i", "$regex": "technique"}}]}, {"publishers": {"$regex": "press", "$options": 'i'}}]}
    search_result = repository_service.search_mongo(None, mongo_query)
    print "search_result:"
    print jsonbson.dumps_bson(search_result, True)

search_query["filter_types"] = ["Book", "BookPart"]
    search_query["rec_class"] = "SearchQuery"
    search_query["rec_metajson"] = 1
    search_query["result_batch_size"] = 100
    search_query["result_bibliographic_styles"] = ["mla"]
    search_query["result_offset"] = 0
    search_query["result_sorts"] = [{"field": "rec_type", "order": "asc"}]
    search_query["search_terms"] = [{"index": "title", "operator": "and", "value": "Cheyenne"}, {"index": "title", "operator": "or", "value": "technique"}]

    print "search_query:"
    print jsonbson.dumps_json(search_query, True)

    search_result = repository_service.search(None, search_query)

    print "search_result:"
    print jsonbson.dumps_bson(search_result, True)

header += "<title>BibLib HTML export</title>\n"
        header += "\n"
        header += "\n"
        output_file.write(header)

        for document in metajson_list:
            source_info = ""
            if "rec_source" in document and document["rec_source"]:
                source_info += document["rec_source"] + ":"
            if "rec_id" in document and document["rec_id"]:
                source_info += document["rec_id"] + ":"
            citation = citations_manager.cite(document, style, "html")

            debug = True
            if debug:
                meta = jsonbson.dumps_bson(document, True)
                output_file.write("<pre>" + meta + "</pre>\n")

                output_file.write("\n")

            output_file.write("<div>" + citation + "</div>\n")

        footer = "\n"
        footer += ""
        output_file.write(footer)

def print_document(document):
    logging.info("document : {}".format(jsonbson.dumps_bson(document)))

elif meta_dict["rec_class"] == "Event":
        return Event(meta_dict)
    elif meta_dict["rec_class"] == "Family":
        return Family(meta_dict)
    elif meta_dict["rec_class"] == "Field":
        return Field(meta_dict)
    elif meta_dict["rec_class"] == "Resource":
        return Resource(meta_dict)
    elif meta_dict["rec_class"] == "Target":
        return Target(meta_dict)
    elif meta_dict["rec_class"] == "Type":
        return Type(meta_dict)
    elif meta_dict["rec_class"] == "Collection":
        return Collection(meta_dict)
    else:
        logging.debug(jsonbson.dumps_bson(meta_dict))
        logging.warning("Unknown rec_class: {O}".format(meta_dict["rec_class"]))
        return Common(meta_dict)

def write_json(item, output_file_path):
    #logging.debug("write_json type(item): {}".format(type(item)))
    with open(output_file_path, "w") as output_file:
        dump = jsonbson.dumps_bson(item, True)
        if dump:
            output_file.write(dump)