title: Azure durable function orchestration client cannot be found when the DurableTask nuget package is upgraded to version 2.0.0
body: <p>Have a queue-triggered function defined as the following example:</p>
  
  <pre><code>public async Task OrchestratorAsync(
              [QueueTrigger("my-queue", Connection = "")]string payload,
              [OrchestrationClient] DurableOrchestrationClient orchestrationClient)
          {
              //Do something
          }
  </code></pre>
  
  <p>The csproj file looks like the following details and it compiles successfully:</p>
  
  <pre><code>
  &lt;PropertyGroup&gt;
      &lt;TargetFramework&gt;netcoreapp2.2&lt;/TargetFramework&gt;
      &lt;AzureFunctionsVersion&gt;v2&lt;/AzureFunctionsVersion&gt;
      &lt;CopyLocalLockFileAssemblies&gt;true&lt;/CopyLocalLockFileAssemblies&gt;
    &lt;/PropertyGroup&gt;
    &lt;ItemGroup&gt;
      &lt;PackageReference Include="Microsoft.Azure.WebJobs.Extensions.DurableTask" Version="1.8.2" /&gt;
      &lt;PackageReference Include="Microsoft.Azure.WebJobs.Extensions.Storage" Version="3.0.10" /&gt;
      &lt;PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.0.0" /&gt;
      &lt;PackageReference Include="Microsoft.NET.Sdk.Functions" Version="1.0.29" /&gt;
    &lt;/ItemGroup&gt;
  &lt;/project&gt;
  </code></pre>
  
  <p>When I upgrade <code>Microsoft.Azure.WebJobs.Extensions.DurableTask</code> to version 2.0.0 the compiler throws error on not being able to find OrchestrationClient and DurableOrchestrationClient. So we're stuck with version 1.8.2! What's the solution for this issue?</p>
  
  <p>Note: This issue is quite reproducible by VS 2019. Have it scaffold a Function project, the create another function as a durable orchestrator, tweak the csproj file and bump up the DurableTask nuget package version to 2.0.0 from the default 1.8.2.</p>