in hmac/core/src/main/scala/com/gu/pandahmac/HMACClient.scala [10:17]
def getHMACHeaders(uri: String): Seq[(String, String)] = {
val headerValues = createHMACHeaderValues(new URI(uri))
Seq(
HMACHeaderNames.dateKey -> headerValues.date,
HMACHeaderNames.hmacKey -> headerValues.token,
HMACHeaderNames.serviceNameKey -> s"$app-$stage"
)
}