Assign to this object the value of the specified rhs, and return a reference providing modifiable access to this object. The contents of rhs are move-assigned to this object. rhs is left in a valid but unspecified state.
rhs
Declared in <bslstl_stringbuf.h>
<bslstl_stringbuf.h>
StringBufContainer& operator=(StringBufContainer&& rhs);