Return get_allocator().mechanism(). Note that this function exists for BDE compatibility and is not part of the C++ Standard Library.
get_allocator().mechanism()
Declared in <bslstl_function.h>
<bslstl_function.h>
BloombergLP::bslma::Allocator* allocator() const noexcept;
DEPRECATED: Use get_allocator() instead.
get_allocator()