Add a new Format.

IsFormat returns true if mediaType begins with "application/cloudevents".

Lookup returns the format for mediaType, or nil if not found.

Marshal an event to bytes using the mediaType event format.

Unmarshal bytes to an event using the mediaType event format.

Prefix for event-format media types.

JSON is the built-in "application/cloudevents+json" format.

Format marshals and unmarshals structured events to bytes.

UnknownFormat allows an event with an unknown format string to be forwarded, but Marshal() and Unmarshal will always fail.