---

@Retention(value = RetentionPolicy.SOURCE)
@StringDef(value = )
@Documented
@Target(value = TYPE_USE)
annotation CmcdConfiguration.HeaderKey

---

Header keys SHOULD be allocated to one of the four defined header names based upon their expected level of variability:

• CMCD-Object: keys whose values vary with the object being requested.
• CMCD-Request: keys whose values vary with each request.
• CMCD-Session: keys whose values are expected to be invariant over the life of the session.
• CMCD-Status: keys whose values do not vary with every request or object.