}
	for k, v := range paxHdrs {
		if !validPAXRecord(k, v) {
			return FormatUnknown, nil, headerError{fmt.Sprintf("invalid PAX record: %q", k+" = "+v)}
		}
	}

	// TODO(dsnet): Re-enable this when adding sparse support.
	// See https://golang.org/issue/22735
	/*
		// Check sparse files.
		if len(h.SparseHoles) > 0 || h.Typeflag == TypeGNUSparse {
			if isHeaderOnlyType(h.Typeflag) {

	}
}

type errReader struct {
	err error
}

func (e errReader) Read(p []byte) (n int, err error) {
	return 0, e.err
}

func TestReadFailures(t *testing.T) {
	customErr := errors.New("unable to read file :(")
	cases := []struct {
		file            string
		recordDelimiter string
		fieldDelimiter  string
		sendErr         error
		header          bool
		wantColumns     []string

pkg os, const ModeType = 2399666176
pkg os, func UserCacheDir() (string, error)
pkg os/signal, func Ignored(os.Signal) bool
pkg regexp/syntax, method (Op) String() string
pkg runtime/trace, func IsEnabled() bool
pkg runtime/trace, func Log(context.Context, string, string)
pkg runtime/trace, func Logf(context.Context, string, string, ...interface{})
pkg runtime/trace, func NewTask(context.Context, string) (context.Context, *Task)

                            logger.warn("  " + unsafePlugin.getId());
                        }
                        logger.warn("");
                        logger.warn("Enable verbose output (-X) to see precisely which goals are not marked as"
                                + " thread-safe.");
                    }
                    logger.warn(MultilineMessageHelper.separatorLine());

				Uid:      1000,
				Gid:      1000,
				Uname:    "rawr",
				Gname:    "dsnet",
				ModTime:  time.Unix(0, 0),
				Format:   FormatGNU,
			}, nil},
			testClose{nil},
		},
		// TODO(dsnet): Re-enable this test when adding sparse support.
		// See https://golang.org/issue/22735
		/*
			}, {
				file: "testdata/gnu-nil-sparse-data.tar",
				tests: []testFnc{
					testHeader{Header{

{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": {
          "type": "datasource",
          "uid": "grafana"
        },
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "target": {
          "limit": 100,
          "matchAny": false,
          "tags": [],
          "type": "dashboard"
        },

{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": {
          "type": "datasource",
          "uid": "grafana"
        },
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "description": "MinIO Grafana Dashboard - https://min.io/",
  "editable": true,

                        inUnicode = false;
                        hadSlash = false;
                    } catch (NumberFormatException nfe) {
                        throw new IllegalArgumentException("Unable to parse unicode value: " + unicode, nfe);
                    }
                }
                continue;
            }

            if (hadSlash) {
                // handle an escaped value

                        inUnicode = false;
                        hadSlash = false;
                    } catch (NumberFormatException nfe) {
                        throw new IllegalArgumentException("Unable to parse unicode value: " + unicode, nfe);
                    }
                }
                continue;
            }

            if (hadSlash) {
                // handle an escaped value

			xhttp.DrainBody(respBody)
			return toStorageErr(err) != errDiskNotFound
		}
	}
	conn := gm.Connection(endpoint.GridHost()).Subroute(endpoint.Path)
	if conn == nil {
		return nil, fmt.Errorf("unable to find connection for %s in targets: %v", endpoint.GridHost(), gm.Targets())
	}
	client := &storageRESTClient{
		endpoint:      endpoint,
		restClient:    restClient,
		gridConn:      conn,