bsl::vector<Json>::insert

Insert at the specified position in this vector the values in the range starting at the specified first element, and ending immediately before the specified last element. Return an iterator referring to the first newly inserted element. If an exception is thrown (other than by the copy constructor, move constructor, assignment operator, or move assignment operator of value_type), *this is unaffected. Throw std::length_error if size() + distance(first, last) > max_size(). The (template parameter) type INPUT_ITER shall meet the requirements of an input iterator defined in the C++11 standard [24.2.3]providing access to values of a type convertible to value_type, and value_type must be emplace-constructible from *i into this vector, where i is a dereferenceable iterator in the range [first .. last)] (see {Requirements on VALUE_TYPE}). The behavior is undefined unless position is an iterator in the range [begin() .. end()] (both endpoints included), and first and last refer to a range of valid values where first is at a position at or before last.