key_compare key_comp() const;

template< class... Args > void emplace( Args&&... args

size_type max_size() const;

const_reference top() const;

template< class Key, class Hash, class KeyEqual, class Alloc >

void push_back( const T& value ); (1)

T* data();

size_type bucket_size( size_type n ) const;

iterator begin();

float load_factor() const;