type context.canceler

5 uses

	context (current package)
		context.go#L250: func propagateCancel(parent Context, child canceler) {
		context.go#L271: 				p.children = make(map[canceler]struct{})
		context.go#L314: func removeChild(parent Context, child canceler) {
		context.go#L328: type canceler interface {
		context.go#L347: 	children map[canceler]struct{} // set to nil by the first cancel call

The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)