Clarify that a new status field may be added.

Signed-off-by: usize <[email protected]>

Author: usize

proposals/10-egress-gateways.md

@@ -164,7 +164,7 @@ A catalog of standard policies will be defined, for example:
 
 TODO: decide on a definitive catalog of processors.
 
-Controllers MUST publish the set of supported processor kinds and versions for a GatewayClass via GatewayClass.status.parametersRef or an implementation-specific status.
+Controllers MUST publish the set of supported processor kinds and versions for a GatewayClass via GatewayClass.status.parametersRef or an implementation-specific status e.g. GatewayClass.status.supportedExtensionKinds.
 
 Admission MUST reject unknown catalog kinds and MAY admit domain-scoped kinds but set status Degraded with reason UnsupportedExtensionType until support is advertised.