[#BloombergLP-bslstl-StopCallback_CallbackStorage-05-2constructor-0c]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/StopCallback_CallbackStorage-05.adoc[StopCallback_CallbackStorage<t_CALLBACK, true>]::StopCallback_CallbackStorage
:relfileprefix: ../../../
:mrdocs:

Initialize the stored reference by forwarding the specified `arg`. Note that the allocator argument is ignored because references are never allocator‐aware.

== Synopsis

Declared in `<bslstl_stoptoken.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_ARG>
StopCallback_CallbackStorage(
    xref:BloombergLP/bslstl/StopCallback_CallbackStorage-05/allocator_type.adoc[allocator_type] const&,
    t_ARG&& arg);
----


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