function evaluateScript(sourceURL, scriptSource)
    {
        _loadedScripts[sourceURL] = true;
        if (!scriptSource) {
            // Do not reject, as this is normal in the hosted mode.
            console.error("Empty response arrived for script '" + sourceURL + "'");
            return;
        }
        self.eval(scriptSource + "\n//# sourceURL=" + sourceURL);
    }
@param {string} sourceURL
@param {string=} scriptSource