const go/token.SHL_ASSIGN

4 uses

	go/token (current package)
		token.go#L61: 	SHL_ASSIGN     // <<=
		token.go#L165: 	SHL_ASSIGN:     "<<=",

	go/parser
		parser.go#L1681: 		token.XOR_ASSIGN, token.SHL_ASSIGN, token.SHR_ASSIGN, token.AND_NOT_ASSIGN:

	go/scanner
		scanner.go#L908: 				tok = s.switch4(token.LSS, token.LEQ, '<', token.SHL, token.SHL_ASSIGN)

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