@@ -181,8 +181,12 @@ type ImageBuildOptions struct {

 	Target      string

 	SessionID   string

 	Platform    string

-	Version     BuilderVersion

-	BuildID     string

+	// Version specifies the version of the unerlying builder to use

+	Version BuilderVersion

+	// BuildID is an optional identifier that can be passed together with the

+	// build request. The same identifier can be used to gracefully cancel the

+	// build with the cancel request.

+	BuildID string

 }

 // BuilderVersion sets the version of underlying builder to use