Return a const iterator to the beginning of this multimap.
Declared in <bslstl_multimap.h>
multimap<KEY, VALUE, COMPARATOR, ALLOCATOR>::const_iterator
cbegin() const noexcept;Return an iterator to the first element, or cend if empty.
Return an iterator providing non-modifiable access to the first value_type object in the ordered sequence of value_type objects maintained by this multimap, or the cend iterator if this multimap is empty.
const iterator to the first element, or cend() if empty