115     type SerializeStructVariant = Impossible<S::Ok, S::Error>;  typedef
117     type SerializeStructVariant = SerializeStructVariantAsMapValue<S::SerializeMap>;  typedef
305     ) -> Result<Self::SerializeStructVariant, Self::Error> {  in serialize_struct_variant()  argument
318     ) -> Result<Self::SerializeStructVariant, Self::Error> {  in serialize_struct_variant()  argument
400     impl<M> ser::SerializeStructVariant for SerializeStructVariantAsMapValue<M>
542                     use ser::SerializeStructVariant;  in serialize()
576         type SerializeStructVariant = SerializeStructVariant<E>;  typedef
762         ) -> Result<Self::SerializeStructVariant, E> {  in serialize_struct_variant()  argument
763             Ok(SerializeStructVariant {  in serialize_struct_variant()
964     pub struct SerializeStructVariant<E> {  struct
972     impl<E> ser::SerializeStructVariant for SerializeStructVariant<E>  implementation
1029     type SerializeStructVariant = FlatMapSerializeStructVariantAsMapValue<'a, M>;  typedef
1184     ) -> Result<Self::SerializeStructVariant, Self::Error> {  in serialize_struct_variant()  argument
1284 impl<'a, M> ser::SerializeStructVariant for FlatMapSerializeStructVariantAsMapValue<'a, M>