Declare MemOutStreamBuf as using a bslma allocator.
MemOutStreamBuf
bslma
Declared in <bdlsb_memoutstreambuf.h>
<bdlsb_memoutstreambuf.h>
operator BloombergLP::bslmf::NestedTraitDeclaration<MemOutStreamBuf, UsesBslmaAllocator>() const;