[#BloombergLP-ball-UserFields-2conversion]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::xref:BloombergLP/ball/UserFields.adoc[UserFields]::operator xref:BloombergLP/bslmf/NestedTraitDeclaration.adoc[BloombergLP::bslmf::NestedTraitDeclaration<UserFields, UsesBslmaAllocator>]
:relfileprefix: ../../../
:mrdocs:

Declare that this type uses a `bslma` allocator.

== Synopsis

Declared in `<ball_userfields.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
operator xref:BloombergLP/bslmf/NestedTraitDeclaration.adoc[BloombergLP::bslmf::NestedTraitDeclaration<UserFields, UsesBslmaAllocator>]() const;
----


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