switch {
	case resourceSize < 0:
		return 0, errors.New("Resource size cannot be negative")

	case h == nil:
		rangeLength = resourceSize

	case h.IsSuffixLength:
		specifiedLen := -h.Start
		rangeLength = specifiedLen
		if specifiedLen > resourceSize {
			rangeLength = resourceSize
		}

	case h.Start >= resourceSize:
		return 0, InvalidRange{
			OffsetBegin:  h.Start,
			OffsetEnd:    h.End,

			specifiedFn:       areKubeletServingSignerFilesSpecified,
			expectedSpecified: true,
			filesFn:           getKubeletServingSignerFiles,
			expectedCert:      "/cluster-signing-kubelet-serving/cert-file",
			expectedKey:       "/cluster-signing-kubelet-serving/key-file",
		},
		{
			name:              "halfASpecified-KubeletServingSignerFilesSpecified",
			config:            halfASpecified,