std::pair<iterator,bool> insert( const value_type& value );

size_type max_size() const;

key_compare key_comp() const;

void clear();

size_type bucket_count() const;

void swap( unordered_multiset& other );

key_equal key_eq() const;

float max_load_factor() const; (1)

bool empty() const;

template< class Key, class Hash, class KeyEqual, class Allocator > bool operator==(