Declare that NullableAllocatedValue uses a bslma allocator.
NullableAllocatedValue
bslma
Declared in <bdlb_nullableallocatedvalue.h>
<bdlb_nullableallocatedvalue.h>
operator BloombergLP::bslmf::NestedTraitDeclaration<NullableAllocatedValue, UsesBslmaAllocator>() const;