ApplyTextureAliases help please

I need to use SubEntity.GetMaterial().ApplyTextureAliases(Const_AliasTextureNamePairList); by appears you can't convert (or cast) from a Mogre.NameValuePairList to the read-only Const_AliasTextureNamePairList.

Any thoughts?

yeah, didn't see the AliasTextureNamePairList class, my apologies