var net/http.envProxyFuncValue

4 uses

	net/http (current package)
		transport.go#L1033: 	envProxyFuncValue func(*url.URL) (*url.URL, error)
		transport.go#L1040: 		envProxyFuncValue = httpproxy.FromEnvironment().ProxyFunc()
		transport.go#L1042: 	return envProxyFuncValue
		transport.go#L1048: 	envProxyFuncValue = nil