code: public static RawBsonDocument parse(final String json) {
          notNull("json", json);
          return new RawBsonDocumentCodec().decode(new JsonReader(json), DecoderContext.builder().build());
      }
docs: Parses a string in MongoDB Extended JSON format to a {@code RawBsonDocument}
  
  @param json the JSON string
  @return a corresponding {@code RawBsonDocument} object
  @see org.bson.json.JsonReader
  @mongodb.driver.manual reference/mongodb-extended-json/ MongoDB Extended JSON
  @since 3.3