292     using const_reference = const value_type&;  typedef in nlohmann::basic_json
3533     const_reference at(size_type idx) const  in at()
3635     const_reference at(const typename object_t::key_type& key) const  in at()
3734     const_reference operator[](size_type idx) const  in operator []()
3821     const_reference operator[](const typename object_t::key_type& key) const  in operator []()
3913     const_reference operator[](T* key) const  in operator []()
4113     const_reference front() const  in front()
4159     const_reference back() const  in back()
4987     static iteration_proxy<const_iterator> iterator_wrapper(const_reference ref) noexcept  in items()
5990     void update(const_reference j)  in update()
6346     friend bool operator==(const_reference lhs, const_reference rhs) noexcept  in operator ==()
6428     friend bool operator==(const_reference lhs, ScalarType rhs) noexcept  in operator ==()
6439     friend bool operator==(ScalarType lhs, const_reference rhs) noexcept  in operator ==()
6462     friend bool operator!=(const_reference lhs, const_reference rhs) noexcept  in operator !=()
6473     friend bool operator!=(const_reference lhs, ScalarType rhs) noexcept  in operator !=()
6484     friend bool operator!=(ScalarType lhs, const_reference rhs) noexcept  in operator !=()
6515     friend bool operator<(const_reference lhs, const_reference rhs) noexcept  in operator <()
6595     friend bool operator<(const_reference lhs, ScalarType rhs) noexcept  in operator <()
6606     friend bool operator<(ScalarType lhs, const_reference rhs) noexcept  in operator <()
6630     friend bool operator<=(const_reference lhs, const_reference rhs) noexcept  in operator <=()
6641     friend bool operator<=(const_reference lhs, ScalarType rhs) noexcept  in operator <=()
6652     friend bool operator<=(ScalarType lhs, const_reference rhs) noexcept  in operator <=()
6676     friend bool operator>(const_reference lhs, const_reference rhs) noexcept  in operator >()
6687     friend bool operator>(const_reference lhs, ScalarType rhs) noexcept  in operator >()
6698     friend bool operator>(ScalarType lhs, const_reference rhs) noexcept  in operator >()
6722     friend bool operator>=(const_reference lhs, const_reference rhs) noexcept  in operator >=()
6733     friend bool operator>=(const_reference lhs, ScalarType rhs) noexcept  in operator >=()
6744     friend bool operator>=(ScalarType lhs, const_reference rhs) noexcept  in operator >=()
8214     const_reference operator[](const json_pointer& ptr) const  in operator []()
8300     const_reference at(const json_pointer& ptr) const  in at()