[#absl-StatusBuilder-AttachPayload-02]
= xref:absl.adoc[absl]::xref:absl/StatusBuilder.adoc[StatusBuilder]::AttachPayload
:relfileprefix: ../../
:mrdocs:

Attaches a `MessageSet` extension payload to the result status.

== Synopsis

Declared in `<absl/status/status_builder.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename MessageSetExtension,
    typename ExtensionIdentifier>
[[nodiscard]]
decltype(std::move(AttachPayload(obj, id)))
AttachPayload(
    MessageSetExtension const& obj,
    ExtensionIdentifier const& id) &&;
----

== Description

As above, but &&‐qualified. Uses `decltype()` to propagate template constraints (SFINAE).

== Return Value

`*this` to allow method chaining.

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====
== Parameters

[cols="1,4"]
|===
| Name| Description
| *obj*
| The extension message to attach.
| *id*
| The extension identifier for `obj`.
|===


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