Method sign

java/lib/src/main/java/io/github/ccxt/exchanges/NdaxCore.java:2830–2909

(Object path, Object... optionalArgs)

    }

    public Object sign(Object path, Object... optionalArgs)
    {
        Object api = Helpers.getArg(optionalArgs, 0, "public");
        Object method = Helpers.getArg(optionalArgs, 1, "GET");
        Object parameters = Helpers.getArg(optionalArgs, 2, new java.util.HashMap<String, Object>() {{}});
        Object headers = Helpers.getArg(optionalArgs, 3, null);
        Object body = Helpers.getArg(optionalArgs, 4, null);
        Object url = Helpers.add(Helpers.add(Helpers.GetValue(Helpers.GetValue(this.urls, "api"), api), "/"), this.implodeParams(path, parameters));
        Object query = this.omit(parameters, this.extractParams(path));
        if (Helpers.isTrue(Helpers.isEqual(api, "public")))
        {
            if (Helpers.isTrue(Helpers.isEqual(path, "Authenticate")))
            {
                Object auth = Helpers.add(Helpers.add(this.login, ":"), this.password);
                Object auth64 = this.stringToBase64(auth);
                headers = new java.util.HashMap<String, Object>() {{
                    put( "Authorization", Helpers.add("Basic ", auth64) );
                }};
            } else if (Helpers.isTrue(Helpers.isEqual(path, "Authenticate2FA")))
            {
                Object pending2faToken = this.safeString(this.options, "pending2faToken");
                if (Helpers.isTrue(!Helpers.isEqual(pending2faToken, null)))
                {
                    final Object finalPending2faToken = pending2faToken;
                    headers = new java.util.HashMap<String, Object>() {{
                        put( "Pending2FaToken", finalPending2faToken );
                    }};
                    query = this.omit(query, "pending2faToken");
                }
            }
            if (Helpers.isTrue(Helpers.getArrayLength(Helpers.objectKeys(query))))
            {
                url = Helpers.add(url, Helpers.add("?", this.urlencode(query)));
            }
        } else if (Helpers.isTrue(Helpers.isEqual(api, "private")))
        {
            this.checkRequiredCredentials();
            Object sessionToken = this.safeString(this.options, "sessionToken");
            if (Helpers.isTrue(Helpers.isEqual(sessionToken, null)))
            {
                Object nonce = String.valueOf(this.nonce());
                Object auth = Helpers.add(Helpers.add(nonce, this.uid), this.apiKey);
                Object signature = this.hmac(this.encode(auth), this.encode(this.secret), sha256());
                final Object finalNonce = nonce;
                headers = new java.util.HashMap<String, Object>() {{
                    put( "Nonce", finalNonce );
                    put( "APIKey", NdaxCore.this.apiKey );
                    put( "Signature", signature );
                    put( "UserId", NdaxCore.this.uid );
                }};
            } else
            {
                final Object finalSessionToken = sessionToken;
                headers = new java.util.HashMap<String, Object>() {{
                    put( "APToken", finalSessionToken );
                }};
            }
            if (Helpers.isTrue(Helpers.isEqual(method, "POST")))