Using existing Azure Functions project

Hey team, I'd like to be able to use an existing Azure Functions project with my Aspire deployment to take advantage of Flex Consumption, but I'm getting compile errors when trying to use the **AsExisting() methods. I'm using VS Code with the latest package versions. I've searched the docs for examples of using AsExisting with Functions projects but can't seem to find clear guidance on how to do this (if it's possible).

AppHost.cs

var existingFuncName = builder.AddParameter("existingFuncName", value: "my-funcs");
var existingFuncResourceGroup = builder.AddParameter("existingFuncResourceGroup", value: "my-rg");

var funcs = builder.AddAzureFunctionsProject<Projects.MyProject_Functions>("functions")
    .RunAsExisting(existingFuncName, existingFuncResourceGroup);  // ERROR ON THIS LINE, red squiggles under "RunAsExisting"

Error text

The type 'Aspire.Hosting.Azure.AzureFunctionsProjectResource' cannot be used as type parameter 'T' in the generic type or method 'ExistingAzureResourceExtensions.RunAsExisting<T>(IResourceBuilder<T>, IResourceBuilder<ParameterResource>, IResourceBuilder<ParameterResource>?)'. There is no implicit reference conversion from 'Aspire.Hosting.Azure.AzureFunctionsProjectResource' to 'Aspire.Hosting.ApplicationModel.IAzureResource'.[CS0311](https://msdn.microsoft.com/query/roslyn.query?appId=roslyn&k=k(CS0311))

AppHost.csproj

<Project Sdk="Aspire.AppHost.Sdk/13.1.0">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net10.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
    <UserSecretsId><REDACTED></UserSecretsId>
  </PropertyGroup>

  <ItemGroup>
    <ProjectReference Include="..\MyProject.ApiService\MyProject.ApiService.csproj" />
    <ProjectReference Include="..\MyProject.Functions\MyProject.Functions.csproj" />
  </ItemGroup>

  <ItemGroup>
      <PackageReference Include="Aspire.Hosting.Azure.Sql" Version="13.1.0" />
      <PackageReference Include="Aspire.Hosting.Azure.Functions" Version="13.1.0" />
      <PackageReference Include="Aspire.Hosting.Azure.Storage" Version="13.1.0" />
      <PackageReference Include="Aspire.Hosting.JavaScript" Version="13.1.0" />
      <PackageReference Include="Aspire.Hosting.OpenAI" Version="13.1.0" />
      <PackageReference Include="Scalar.Aspire" Version="0.7.3" />
    </ItemGroup>

</Project>

User Secrets snippet

{
  "Azure:SubscriptionId": "<my subscription id>",
  "Azure:ResourceGroup": "my-rg",
  "Azure:Location": "eastus2"
}