Blazor: Complex properties of the same type with different validation

[Liero]

Consider following model:

public class Model 
{
   public ChildModel Prop1 {get; set;}
   public ChildModel Prop2 {get; set;}
}
public class ChildModel 
{
   public string ChildProp {get; set;}
}

I want to be able to validate Prop1.ChildProp and Prop2.ChildProp using different validation rules. E.g.:

<EditForm Model="model">
   <FluentValidator Validator="new ModelValidator()" />

   <InputText @bind-Value="model.Prop1.ChildProp" />
   <ValidationMessage For="() => model.Prop1.ChildProp" />

   <InputText @bind-Value="model.Prop2.ChildProp" />
   <ValidationMessage For="() => model.Prop2.ChildProp" />
</EditForm>
@code
{
   Model model = new Model();
   public class ModelValidator: AbstractValidator<Model>
   {
       RuleFor(() => Prop1.ChildProp).NotEmpty();
       RuleFor(() => Prop2.ChildProp).Empty();
   }
}

The problem is, that FieldIdentifier for Prop1.ChildProp does not contain the information, whether we are editing Prop1 or Prop2, so there is do way to know, which rule to apply.