message: Updated SearchOptions proto docstring
diff: @@ -25,6 +25,16 @@ option java_package = "org.tensorflow.lite.task.processor.proto";
  // https://github.com/tensorflow/tflite-support/blob/master/tensorflow_lite_support/cc/task/processor/proto/search_options.proto
  // Next Id: 4
  message SearchOptions {
  + // Represents external files used by the Task APIs (e.g. TF Lite FlatBuffer or
  + // plain-text labels file). The files can be specified by one of the following
  + // two ways:
  + //
  + // (1) file contents loaded in `index_file_name`.
  + // (2) file path in `index_file_content`.
  + //
  + // If more than one field of these fields is provided, they are used in this
  + // precedence order.
  + //
  // The path to the index file to open and mmap in memory.
  optional string index_file_name = 1;
  // The index file contents as a byte array.
  