@brief return whether the value has a subtype @sa https://json.nlohmann.me/api/byte_container_with_subtype/has_subtype/

@brief return whether value is discarded @sa https://json.nlohmann.me/api/basic_json/is_discarded/

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

@brief helper to access iterator member functions in range-based for @sa https://json.nlohmann.me/api/basic_json/items/

@brief create a new JSON pointer by appending the right JSON pointer at the end of the left JSON pointer @sa https://json.nlohmann.me/api/json_pointer

create reverse iterator from iterator

! @param[in,out] r reference to a JSON value that is manipulated while parsing @param[in] allow_exceptions_ whether p

default constructor (for null values)

return the key of an object iterator

! transfer a directory listing * * @param[in] session ftp session * * @returns whether to call again */

@brief returns the maximum possible number of elements @sa https://json.nlohmann.me/api/basic_json/max_size/

@brief applies a JSON Merge Patch @sa https://json.nlohmann.me/api/basic_json/merge_patch/

! @brief returns x * y @note The result is rounded. (Only the upper q bits are returned.) */