Source
void addTextFile(String name, String url) {
var loader = HttpRequest.getString(url).then((text) => text, onError: (error) {
throw new StateError("Failed to load text file.");
});
_addResource("TextFile", name, url, loader);
}
void addTextFile(String name, String url) {
var loader = HttpRequest.getString(url).then((text) => text, onError: (error) {
throw new StateError("Failed to load text file.");
});
_addResource("TextFile", name, url, loader);
}