getAssistRequest method
Return the assist request that should be passes to the contributors returned from getAssistContributors.
Throw a RequestFailure if the request could not be created.
Implementation
@override
Future<AssistRequest> getAssistRequest(
EditGetAssistsParams parameters) async {
var path = parameters.file;
var result = await getResolvedUnitResult(path);
return DartAssistRequestImpl(
resourceProvider, parameters.offset, parameters.length, result);
}