on<T> method
Subscribe to a series of param by key
.
Implementation
Stream<T>? on<T>(String key) {
if (module == anchor) {
return anchor.onParam(key);
}
if (module is ModuleParamScheme) {
final paramModule = module as ModuleParamScheme;
if (paramModule.hasParamScheme<T>(key)) {
return paramModule.onParam(key);
}
}
return module.parent?._moduleContext.on(key);
}