BloombergLP::bslma::UsesBslmaAllocator<bsl::unordered_map<KEY, VALUE, HASH, EQUAL, ALLOCATOR>>

template<
    class KEY,
    class VALUE,
    class HASH,
    class EQUAL,
    class ALLOCATOR>
struct UsesBslmaAllocator<bsl::unordered_map<KEY, VALUE, HASH, EQUAL, ALLOCATOR>>
    : bsl::is_convertible<Allocator*, ALLOCATOR>::type