// Returns the mapping from the `exportparts` attribute in the regular direction, that is, inner-tree->outer-tree.
Returns the mapping from the `exportparts` attribute in the regular direction, that is, inner-tree->outer-tree.
Returns the mapping from the ` exportparts ` attribute in the regular direction that is inner - tree - > outer - tree .
fn exported_part(
        &self,
        _name: &<Self::Impl as SelectorImpl>::PartName,
    ) -> Option<<Self::Impl as SelectorImpl>::PartName> {
        None
    }
fn exported_part ( & self , _name : & < Self :: Impl as SelectorImpl > :: PartName , ) -> Option < < Self :: Impl as SelectorImpl > :: PartName > { None }
Returns the mapping from the `exportparts` attribute in the regular direction, that is, inner-tree->outer-tree.
Returns the mapping from the ` exportparts ` attribute in the regular direction that is inner - tree - > outer - tree .
&self
_name
&<Self::Impl as SelectorImpl>::PartName