it's the naming convention that does it. "Impls have a strict naming convention, like ImplMyTraitForMyStruct. This is used to automate the list of implementati

it's the naming convention that does it. "Impls have a strict naming convention, like ImplMyTraitForMyStruct. This is used to automate the list of implementations for MyStruct; you don't need to explicitly list any superclasses of MyStruct, just based on the Impl name it will inherit from all relevant Impls."