// File operations.
	ListDir(ctx context.Context, origvolume, volume, dirPath string, count int) ([]string, error)
	ReadFile(ctx context.Context, volume string, path string, offset int64, buf []byte, verifier *BitrotVerifier) (n int64, err error)
	AppendFile(ctx context.Context, volume string, path string, buf []byte) (err error)

    assertEquals(ImmutableList.of("foo", "bar", "baz", "something"), lines.readLines());
    assertTrue(lines.wasStreamOpened() && lines.wasStreamClosed());
  }

  public void testReadLines_withProcessor() throws IOException {
    TestCharSource lines = new TestCharSource(LINES);
    List<String> list =
        lines.readLines(
            new LineProcessor<List<String>>() {

            "type" : "keyword"
          },
          "createdTime" : {
            "type" : "long"
          },
          "permissions" : {
            "type" : "keyword"
          },
          "reading" : {
            "type" : "keyword"
          },
          "suggestWord" : {
            "type" : "keyword"
          },
          "updatedBy" : {
            "type" : "keyword"
          },

Consider an application streaming a video over http/2. Perhaps the user pauses the video and the application stops reading bytes from this stream. The buffer will fill up, and flow control prevents the server from sending more data on this stream. When the user unpauses her video the buffer drains, the read is acknowledged, and the server proceeds to stream data.

   *
   * The deadline to respond to this ping attempts to limit the cost of being wrong. If it is too
   * long, streams created while we await the pong will reuse broken connections and inevitably
   * fail. If it is too short, slow connections will be marked as failed and extra TCP and TLS
   * handshakes will be required.
   *
   * The deadline is currently hardcoded. We may make this configurable in the future!

            }, this::asEditHtml);
        }
        if (form.segmentation != null && form.reading != null && form.segmentation.split(" ").length != form.reading.split(" ").length) {
            throwValidationError(messages -> {
                messages.addErrorsInvalidKuromojiSegmentation("segmentation", form.segmentation, form.reading);
            }, this::asEditHtml);
        }
    }

				}
				return err
			case err == nil:
				log.Warn("ztunnel protocol error, unexpected message")
				return fmt.Errorf("ztunnel protocol error, unexpected message")
			default:
				// we get here if error is deadline exceeded, which means ztunnel is alive.
			}

		case <-ctx.Done():
			return nil
		}
	}
}

func (z *ztunnelServer) PodDeleted(ctx context.Context, uid string) error {

	respBody, err := client.callGet(ctx, storageRESTMethodReadFileStream, values, nil, -1)
	if err != nil {
		return nil, toStorageErr(err)
	}
	return respBody, nil
}

// ReadFile - reads section of a file.
func (client *storageRESTClient) ReadFile(ctx context.Context, volume string, path string, offset int64, buf []byte, verifier *BitrotVerifier) (int64, error) {
	values := make(url.Values)
	values.Set(storageRESTVolume, volume)

  }

  public void testReadLines() throws IOException {
    // TODO(chrisn): Check in a better resource
    URL resource = getClass().getResource("testdata/i18n.txt");
    assertEquals(ImmutableList.of(I18N), Resources.readLines(resource, UTF_8));
  }

  public void testReadLines_withLineProcessor() throws IOException {
    URL resource = getClass().getResource("testdata/alice_in_wonderland.txt");

	if err != nil {
		t.Fatalf("Expected GetObject reading data to succeed, but failed with %v", err)
	}
	gr.Close()

	const expectedHash = "fffb6377948ebea75ad2b8058e849ef5"
	foundHash := fmt.Sprintf("%x", h.Sum(nil))
	if foundHash != expectedHash {
		t.Fatalf("Expected data to have md5sum = `%s`, found `%s`", expectedHash, foundHash)
	}
}

// Test reading an object with some outdated data in some disks