42   typedef MutableVal *iterator;  typedef
62   struct iterator {  struct
73 T::iterator begin(T&);  argument
91   struct iterator {  struct
99   struct iterator {  struct
131   struct iterator : iterator_base {  struct
185   struct iterator : iterator_base {  struct
208   typedef IteratorType* iterator;  typedef
222   struct iterator {  struct
233   struct iterator {  struct
234     typedef T &deref_type;
245   struct iterator {  struct
246     typedef T &&deref_type;