Exchange the values of the specified lhs and rhs objects when TYPE does not use a bslma::Allocator.
Declared in <bdlb_nullablevalue.h>
template<class TYPE>
void
swap(
NullableValue<TYPE>& lhs,
NullableValue<TYPE>& rhs)
requires !BloombergLP::bslma::UsesBslmaAllocator<TYPE>::value;