return errors.New("ScanRange: No Start or End specified")
	}
	if s.Start == nil || s.End == nil {
		return nil
	}
	if *s.Start > *s.End {
		return errors.New("ScanRange: Start cannot be after end")
	}
	return nil
}

// StartLen returns start offset plus length from range.
func (s *ScanRange) StartLen() (start, length int64, err error) {

		if err != nil {
			return nil, nil, fmt.Errorf("Drive %s: %w", export, err)
		}
		// Migrate successful v2 => v3, v3 is latest
		// version = formatXLVersionV3
		return migrate(formatPath, formatData)
	case formatErasureVersionV3:
		// v3 is the latest version, return.
		return formatData, formatFi, nil
	}
	return nil, nil, fmt.Errorf(`Disk %s: unknown format version %s`, export, version)

			// part.1's - in such a scenario we must return as if client
			// disconnected. This means that erasure.Encode() CreateFile()
			// did not do anything.
			return pi, IncompleteBody{Bucket: bucket, Object: object}
		}

		return pi, toObjectErr(err, minioMetaMultipartBucket, partPath)
	}

	// Return success.
	return PartInfo{
		PartNumber:     partInfo.Number,

func generateCredentialStr(accessKey, date, region, service, requestVersion string) string {
	return "Credential=" + joinWithSlash(accessKey, date, region, service, requestVersion)
}

// joins the argument strings with a '/' and returns it.
func joinWithSlash(accessKey, date, region, service, requestVersion string) string {
	return strings.Join([]string{
		accessKey,
		date,
		region,
		service,
		requestVersion,

func (x xlMetaInlineData) versionOK() bool {
	if len(x) == 0 {
		return true
	}
	return x[0] > 0 && x[0] <= xlMetaInlineDataVer
}

func (x xlMetaInlineData) json(value bool) ([]byte, error) {
	if len(x) == 0 {
		return []byte("{}"), nil
	}
	if !x.versionOK() {
		return nil, errors.New("xlMetaInlineData: unknown version")
	}

        return of("a").iterator();
      }
    }.test();
  }

  @GwtIncompatible // slow (~30s)
  public void testIterator_general() {
    new IteratorTester<String>(
        5, UNMODIFIABLE, asList("a", "b", "c"), IteratorTester.KnownOrder.KNOWN_ORDER) {
      @Override
      protected Iterator<String> newTargetIterator() {
        return of("a", "b", "c").iterator();
      }

* **Convert data**: from the request to the required type.
* **Validate data**: coming from each request:
    * Generating **automatic errors** returned to the client when the data is invalid.
* **Document** the API using OpenAPI:
    * which is then used by the automatic interactive documentation user interfaces.

      if (!service.isRunning()) {
        return false;
      }
    }
    return true;
  }

  /**
   * Provides a snapshot of the current state of all the services under management.
   *
   * <p>N.B. This snapshot is guaranteed to be consistent, i.e. the set of states returned will
   * correspond to a point in time view of the services.
   *
   * @since 29.0 (present with return type {@code ImmutableMultimap} since 14.0)

      if (!service.isRunning()) {
        return false;
      }
    }
    return true;
  }

  /**
   * Provides a snapshot of the current state of all the services under management.
   *
   * <p>N.B. This snapshot is guaranteed to be consistent, i.e. the set of states returned will
   * correspond to a point in time view of the services.
   *
   * @since 29.0 (present with return type {@code ImmutableMultimap} since 14.0)

    get() = scheme == "https"

  /** Returns this URL as a [java.net.URL][URL]. */
  @JvmName("url")
  fun toUrl(): URL {
    try {
      return URL(url)
    } catch (e: MalformedURLException) {
      throw RuntimeException(e) // Unexpected!
    }
  }

  /**
   * Returns this URL as a [java.net.URI][URI]. Because `URI` is more strict than this class, the
   * returned URI may be semantically different from this URL: