invokeMapMethod<K, V> method
Implementation
@protected
Future<Map<K, V>> invokeMapMethod<K, V>(String method, {dynamic arguments}) async {
final value = await invokeOptionalMapMethod<K, V>(
method,
arguments: arguments,
);
if (value != null) {
return value;
} else {
throw ArgumentError.notNull("$method result");
}
}