Insert into this unordered multimap a newly created value_type object, constructed by forwarding get_allocator() (if required) and the specified (variable number of) args to the corresponding constructor of value_type. Return an iterator referring to the newly created and inserted object in this unordered multimap. This method requires that the (template parameter) types KEY and VALUE both be emplace-constructible from args (see {Requirements on KEY and VALUE}).
Declared in <bslstl_unorderedmultimap.h>
template<class... Args>
unordered_multimap<KEY, VALUE, HASH, EQUAL, ALLOCATOR>::iterator
emplace(Args&&... args);