Version

interface Version

Represents content version

appendHeadersTo	`abstract fun appendHeadersTo(builder: HeadersBuilder): Unit` Appends relevant headers to the builder
check	`abstract fun check( requestHeaders: Headers ): VersionCheckResult` Checks requestHeaders against this version and returns VersionCheckResult

EntityTagVersion	`data class EntityTagVersion : Version` This version checks etag value and pass it through conditions supplied by the remote client. Depending on conditions it produces return value of enum type VersionCheckResult
LastModifiedVersion	`data class LastModifiedVersion : Version` This version passes the given lastModified date through the client provided http conditional headers If-Modified-Since and If-Unmodified-Since.