103     type SerializeStruct = S::SerializeStruct;  typedef
290     ) -> Result<Self::SerializeStruct, Self::Error> {  in serialize_struct()
569         type SerializeStruct = SerializeStruct<E>;  typedef
738         ) -> Result<Self::SerializeStruct, E> {  in serialize_struct()
927     pub struct SerializeStruct<E> {  struct
928         name: &'static str,
929         fields: Vec<(&'static str, Content)>,
930         error: PhantomData<E>,
933     impl<E> ser::SerializeStruct for SerializeStruct<E>  implementation
1017     type SerializeStruct = FlatMapSerializeStruct<'a, M>;  typedef
1164     ) -> Result<Self::SerializeStruct, Self::Error> {  in serialize_struct()