contentRange
fun HeadersBuilder.contentRange(range: LongRange?, fullLength: Long? = null, unit: String = RangeUnits.Bytes.unitToken)
fun ApplicationResponse.contentRange(range: LongRange?, fullLength: Long? = null, unit: String = RangeUnits.Bytes.unitToken)
Appends the Content-Range
header with the specified range and fullLength to a response.