[#BloombergLP-bslstl-UnorderedSetKeyConfiguration-extractKey]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/UnorderedSetKeyConfiguration.adoc[UnorderedSetKeyConfiguration]::extractKey
:relfileprefix: ../../../
:mrdocs:

Given a specified `object`, return a reference to the `KeyType` contained within that object. In this case, the `KeyType` returned is simply the object itself.

== Synopsis

Declared in `<bslstl_unorderedsetkeyconfiguration.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
xref:BloombergLP/bslstl/UnorderedSetKeyConfiguration/KeyType.adoc[UnorderedSetKeyConfiguration<VALUE_TYPE>::KeyType] const&
extractKey(VALUE_TYPE const& object);
----


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