dispatch abstract method
Invoke named method with parameters on an instance.
return a Future of the result, if possible. Catch, repackage and return (not throw or rethrow) All Errors. positionalParams shall be a List or null. namedParams shall be a Map of String:value or null.
Implementation
Future<dynamic> dispatch(String methodName,
[List<dynamic> positionalParams, Map<String, dynamic>? namedParams]);