go/token.node.key (field)

4 uses

	go/token (current package)
		tree.go#L45: 	key     key   // = file.key(), but improves locality (25% faster)
		tree.go#L115: 		sign := compareKey(k, x.key)
		tree.go#L148: 				x = t.nextAfter(t.locate(x.key))
		tree.go#L334: 	x := &node{file: file, key: file.key(), parent: parent, height: -1}