List resources with two different resources but same resource type

[pshao25]

An example:

There are two resources in Diagnostics (though they share the same model, but these two paths have different actions), this one and this one. Pay attention to the same resource type: Microsoft.Compute/locations/diagnostics. Let's call them AResource and BResource for now.

"/subscriptions/{subscriptionId}/providers/Microsoft.Compute/locations/{location}/diagnostics/diskInspection":
"/subscriptions/{subscriptionId}/providers/Microsoft.Compute/locations/{location}/diagnostics/spotPlacementRecommender":

They also have a list operation:

"/subscriptions/{subscriptionId}/providers/Microsoft.Compute/locations/{location}/diagnostics":

If there is only AResource, we will generate SDK like:

public static Pageable<AResource> GetResources(); 

If there is only BResource, we will generate SDK like:

public static Pageable<BResource> GetResources(); 

Now we have both AResource and BResource, then question is what is this list listing?

1. From the route, we actually don't know which resource it is listing.
2. From SDK perspective, we don't have a way to generate both of them if this list means both AResource and BResource.

To be more general:

When below conditions are satisfied, this issue comes up:

1. Two paths, same resource type.
2. Different actions on these two paths so seems these two paths cannot combine together.
3. A list operation listing this resource type.

[pshao25]

A related issue Azure/autorest.csharp#2562