code: public static BasicDBObject parse(final String json) {
          return parse(json, DBObjectCodec.getDefaultRegistry().get(BasicDBObject.class));
      }
docs: Parses a string in MongoDB Extended JSON format to a {@code BasicDBObject}.
  
  @param json the JSON string
  @return a corresponding {@code BasicDBObject} object
  @see org.bson.json.JsonReader
  @mongodb.driver.manual reference/mongodb-extended-json/ MongoDB Extended JSON