Polymorphic wrapper around an STL-style allocator. Note that AllocatorAdaptor::Type is the same type regardless of whether or not the compiler supports alias templates. It should be used, therefore, whenever the exact type of the adaptor is important.
Declared in <bslma_allocatoradaptor.h>
template<class STL_ALLOC>
using AllocatorAdaptor = /* implementation-defined */;