Return the address providing modifiable access to the BloombergLP::bslma::SharedPtrRep object used by this shared pointer, or 0 if this shared pointer is empty.
BloombergLP::bslma::SharedPtrRep
Declared in <bslstl_sharedptr.h>
<bslstl_sharedptr.h>
BloombergLP::bslma::SharedPtrRep* rep() const noexcept;