Issue with the SDK Request for Expanding Hidden Columns in SharePoint List

[M-Patrone]

I'm not entirely sure if this is the right place to post this, but I figured I'd start here.

I've encountered an issue when trying to retrieve the columns of a list from a SharePoint site using the Microsoft Graph API. Specifically, I'm using the query parameter expand=hidden to include hidden columns in the response.

According to the documentation, the request should look like this: https://graph.microsoft.com/v1.0/sites/{site-id}/lists/{list-id}/columns?expand=hidden

This works perfectly in the Graph Explorer. However, when I click on the Code snippets option in Graph Explorer, it suggests the following C# code for the request:

var result = await graphClient.Sites["{site-id}"].Lists["{list-id}"].Columns.GetAsync((requestConfiguration) =>
{
	requestConfiguration.QueryParameters.Expand = new string []{ "hidden" };
});

When I try this code in my project, the request executes as follows: https://graph.microsoft.com/v1.0/sites/…/columns?%24expand=hidden. This results in an error:

{
    "error": {
        "code": "BadRequest",
        "message": "Parsing OData Select and Expand failed: Property 'hidden' on type 'microsoft.graph.columnDefinition' is not a navigation property or complex property. Only navigation properties can be expanded.",
        "innerError": {
            "date": "2024-10-10T19:19:00",
            "request-id": "a",
            "client-request-id": "7"
        }
    }
}

To solve this, I replaced the $ symbol with an empty string in the query parameter, and that seemed to work. However, this appears to be an issue with the SDK.

I believe this SDK is generated using Kiota, and I found an openapi.yaml file in this repository with the relevant configuration. My understanding is that the error might originate from this section:

 '/sites/{site-id}/lists/{list-id}/columns':
    description: Provides operations to manage the columns property of the microsoft.graph.list entity.
    get:
      tags:
        - sites.list
      summary: List columnDefinitions in a list
      description: Get the collection of columns represented as columnDefinition resources in a list.
      externalDocs:
        description: Find more info here
        url: https://learn.microsoft.com/graph/api/list-list-columns?view=graph-rest-1.0
      operationId: sites.lists.ListColumns
      parameters:
        - $ref: '#/components/parameters/top'
        - $ref: '#/components/parameters/skip'
        - $ref: '#/components/parameters/search'
        - $ref: '#/components/parameters/filter'
        - $ref: '#/components/parameters/count'
        - name: $orderby
          in: query
          description: Order items by property values
          style: form
          explode: false
          schema:
            uniqueItems: true
            type: array
            items:
              type: string
        - name: $select
          in: query
          description: Select properties to be returned
          style: form
          explode: false
          schema:
            uniqueItems: true
            type: array
            items:
              type: string
        - name: $expand
          in: query
          description: Expand related entities
          style: form
          explode: false
          schema:
            uniqueItems: true
            type: array
            items:
              type: string

It seems that the parameter name $expand might need to be specified without the $ symbol here.

I would appreciate any guidance on whether the request should be updated to work with or without the $ symbol and how to make the necessary adjustments. I'm also willing to help but need some direction on where exactly to make changes.

Thank you for your time and assistance!