getExtension<T extends Extension> method
T
getExtension<T extends Extension>()
Get an extension T
of runner
An exception will be throw in case T
not exist.
Implementation
T getExtension<T extends Extension>() {
if (!_runner._extensions.containsKey(T)) {
throw RunnerException.extensionNotExist(T);
}
return _runner._extensions[T]! as T;
}