boost::gil::const_iterator_type<dereference_iterator_adaptor<I, DFn>>
Synopsis
template<
typename I,
typename DFn>
struct const_iterator_type<dereference_iterator_adaptor<I, DFn>>;
template<
typename I,
typename DFn>
struct const_iterator_type<dereference_iterator_adaptor<I, DFn>>;