110     type SerializeTupleVariant = Impossible<S::Ok, S::Error>;  typedef
112     type SerializeTupleVariant = SerializeTupleVariantAsMapValue<S::SerializeMap>;  typedef
258     ) -> Result<Self::SerializeTupleVariant, Self::Error> {  in serialize_tuple_variant()  argument
271     ) -> Result<Self::SerializeTupleVariant, Self::Error> {  in serialize_tuple_variant()  argument
360     impl<M> ser::SerializeTupleVariant for SerializeTupleVariantAsMapValue<M>
518                     use ser::SerializeTupleVariant;  in serialize()
573         type SerializeTupleVariant = SerializeTupleVariant<E>;  typedef
726         ) -> Result<Self::SerializeTupleVariant, E> {  in serialize_tuple_variant()  argument
727             Ok(SerializeTupleVariant {  in serialize_tuple_variant()
852     pub struct SerializeTupleVariant<E> {  struct
860     impl<E> ser::SerializeTupleVariant for SerializeTupleVariant<E>  implementation
1028     type SerializeTupleVariant = Impossible<Self::Ok, M::Error>;  typedef
1162     ) -> Result<Self::SerializeTupleVariant, Self::Error> {  in serialize_tuple_variant()  argument