presto-proxy/src/main/java/io/prestosql/proxy/ProxyConfig.java/ProxyConfig/setSharedSecretFile
class ProxyConfig:    @Config("proxy.shared-secret-file")
    @ConfigDescription("Shared secret file used for authenticating URIs")
    public ProxyConfig setSharedSecretFile(File sharedSecretFile)
    {
        this.sharedSecretFile = sharedSecretFile;
        return this;
    }