import okhttp3.internal.commonValues
import okhttp3.internal.headersCheckName
import okhttp3.internal.http.toHttpDateOrNull
import okhttp3.internal.http.toHttpDateString
import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement

/**
 * The header fields of a single HTTP message. Values are uninterpreted strings; use `Request` and
 * `Response` for interpreted headers. This class maintains the order of the header fields within