Returns information about the app asset.
Example
fin.desktop.System.getAppAssetInfo({alias:'procexp'}, function (appAssetInfoObj) {
console.log("alias:", appAssetInfoObj.alias);
console.log("target:", appAssetInfoObj.target);
console.log("version:", appAssetInfoObj.version);
}, function (err) {
console.error("Failed to get app asset info, error message:", err);
});