Return a bsl::allocator constructed from the bslma::Allocator used by this object to supply memory. Note that if no allocator was supplied at construction the default allocator in effect at construction is used.
bsl::allocator
bslma::Allocator
Declared in <bdlb_nullableallocatedvalue.h>
<bdlb_nullableallocatedvalue.h>
bsl::allocator<char> get_allocator() const;