Expression should be string type for workspace info scan

[richardoliverpearce]

Description

A few sentences describing the overall goals of the pull request's commits.

UNTESTED

I could not raise an issue, so here's a basic PR example.

There is a bug for WorkspaceInfoScan since version 4.11.0. When triggering a scan:

var scan = await powerBIClient.WorkspaceInfo.PostWorkspaceInfoWithHttpMessagesAsync(requiredWorkspaces, true, true, true, true, true, cancellationToken: cancellationToken);

Then retrieving result:

var response = await powerBIClient.WorkspaceInfo.GetScanResultWithHttpMessagesAsync(scanId, cancellationToken: cancellationToken);

Results in following exception:

Exception: Microsoft.Rest.SerializationException: Unable to deserialize the response.
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureType(JsonReader reader, Object value, CultureInfo culture, JsonContract contract, Type targetType)
---> Newtonsoft.Json.JsonSerializationException: Error converting value "let
    Source = AnalysisServices.Database("powerbi://***"),
    Cubes = Table.Combine(Source[Data]),
    Cube = Cubes{[Id="Model", Kind="Cube"]}[Data]
in
    Cube" to type 'Microsoft.PowerBI.Api.Models.ASMashupExpression'. Path 'workspaces[1].datasets[0].expressions[0].expression', line 1, position 453138.
--- End of inner exception stack trace ---
---> System.ArgumentException: Could not cast or convert from System.String to Microsoft.PowerBI.Api.Models.ASMashupExpression.

Question

please answer the following questions. put x inside [ ] (e.g. [x])

What inside?

• Bug Fixes?
• New Features?
• Documentation?

Is pull request totally generated from swagger file?

• Yes.
• [] No, part of it is auto-generated.

Backward compatibility break?

• Yes. Pull request breaks backward compatibility!

Learn more about backward compatibility.

[richardoliverpearce]

@microsoft-github-policy-service agree

[richardoliverpearce]

Hi @ayeshurun

I can see you're the most active user contributing to this repository. Could you please assist with this issue?

Thanks,

Richard