std::unordered_map<Key,T,Hash,KeyEqual,Allocator>::end(size_type), std::unordered_map<Key,T,Hash,KeyEqual,Allocator>::cend(size_type)

From cppreference.com

local_iterator end( size_type n );
(since C++11)
const_local_iterator end( size_type n ) const;
(since C++11)
const_local_iterator cend( size_type n ) const;
(since C++11)

Returns an iterator to the element following the last element of the bucket with index n

Parameters

n - the index of the bucket to access

Return value

Iterator to the element following the last element.

Complexity

Constant.

See also

returns an iterator to the beginning of the specified bucket
(public member function)