Code Creation - "Declare Type" should define base type for new declarations if it is possible

E.g. let's consider this code:

SourceTreeModificationRuleCollection rules = new SourceTreeModificationRuleCollection();
rules.Add(new RenameLocalsNormalizationRule());

Where method Add has single parameter of type ISourceTreeModificationRule.

I think Declare Class can use this information to generate base type for newly created class.

Currently Declare Class generates:

  public class RenameLocalsNormalizationRule
  {
    public RenameLocalsNormalizationRule()
    {
    }
  }

But it can be smarter and generate this:

  public class RenameLocalsNormalizationRule : ISourceTreeModificationRule
  {
    public RenameLocalsNormalizationRule()
    {
    }
  }