code: public static <S extends Message> LzoProtobufSource<S> at(Path path, Class<S> protoClass) {
      return new LzoProtobufSource<S>(path, EBTypes.protos(protoClass));
    }
docs: Factory method for creating a new {@code LzoProtobufSource} from a given path and protocol buffer
  message class.
  
  @param path path to the data
  @param protoClass the Message class to read
  @return a new {@code LzoProtobufSource}