102     type SerializeMap = S::SerializeMap;  typedef
280     fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {  in serialize_map()
568         type SerializeMap = SerializeMap<E>;  typedef
726         fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap, E> {  in serialize_map()
876     pub struct SerializeMap<E> {  struct
877         entries: Vec<(Content, Content)>,
878         key: Option<Content>,
879         error: PhantomData<E>,
882     impl<E> ser::SerializeMap for SerializeMap<E>  implementation
1016     type SerializeMap = FlatMapSerializeMap<'a, M>;  typedef
1156     fn serialize_map(self, _: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {  in serialize_map()