Providing a parameter value from middleware

Using Middleware in an azure function, is it possible to modify the context to bind an object to a parameter in the function?

```
public class FunctionInvocationLoggingMiddleware : IFunctionsWorkerMiddleware
{
public async Task Invoke(FunctionContext context, FunctionExecutionDelegate next)
{
context.SupplyParameter("myObject", new someObject()); // Fictional code that shows what I want to do
await next(context);
}
}
```

```
[Function("Function1")]
public HttpResponseData Run([HttpTrigger(AuthorizationLevel.Function, "get", "post")] HttpRequestData req,
someObject myObject) // This value is provided by the middleware if requested
{
....
}
```

This would be similar to MVC value providers, I guess.

The use case is that I have a lot of functions that take a blob of xml, and it would be nice to be able to parse, log and debug that xml in the middleware before simply providing the C# type to the function all nice and ready to go.