BloombergLP::bslstl::Variant_Base::operator BloombergLP::bslmf::NestedTraitDeclaration<Variant_Base, UsesBslmaAllocator, (BloombergLP::bslstl::Variant_UsesBslmaAllocatorAny<t_HEAD, t_TAIL...>::value)>

Nested trait declaration for UsesBslmaAllocator.