const go/token.PACKAGE

4 uses

	go/token (current package)
		token.go#L117: 	PACKAGE
		token.go#L223: 	PACKAGE:   "package",

	go/parser
		parser.go#L2865: 	pos := p.expect(token.PACKAGE)

	go/printer
		nodes.go#L1995: 	p.print(token.PACKAGE, blank)