TODO: Implement RAII on NcmContentMetaDatabase

@brief returns a const reverse iterator to the last element @sa https://json.nlohmann.me/api/basic_json/crbegin/

@brief returns a const reverse iterator to one before the first @sa https://json.nlohmann.me/api/basic_json/crend/

! @brief dump a floating-point number Dump a given floating-point number to output stream @a o. Works internally with @a number_buffer.

! For n != 0, returns k, such that pow10 := 10^(k-1) <= n < 10^k. For n == 0, returns 1 and sets pow10 := 1. */

! For a normalized diyfp w = f * 2^e, this function returns a (normalized) cached power-of-ten c = f_c * 2^e_c, such that the exponent of the product

! Generates V = buffer * 10^decimal_exponent, such that M- <= V <= M+. M- and M+ must be normalized and share the same exponent -60 <= e <= -32. */

@brief return whether value is a number @sa https://json.nlohmann.me/api/basic_json/is_number/

@brief return whether value is an integer number @sa https://json.nlohmann.me/api/basic_json/is_number_integer/

@brief return whether type is structured @sa https://json.nlohmann.me/api/basic_json/is_structured/

! @brief add to iterator @pre The iterator is initialized; i.e. `m_object != nullptr`. */

add to iterator

@brief add an object to an array @sa https://json.nlohmann.me/api/basic_json/operator+=/

! @brief subtract from iterator @pre The iterator is initialized; i.e. `m_object != nullptr`. */

* Overload to make the compiler happy while it is instantiating * dump_integer for number_unsigned_t. * Must never be called. */