[#BloombergLP-bdlb-OptionalPrinter-2conversion]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/OptionalPrinter.adoc[OptionalPrinter]::operator xref:BloombergLP/bslmf/NestedTraitDeclaration.adoc[BloombergLP::bslmf::NestedTraitDeclaration<OptionalPrinter, EnableStreamedFormatter>]
:relfileprefix: ../../../
:mrdocs:

Declare that this type enables the streamed formatter.

== Synopsis

Declared in `<bdlb_optionalprinter.h>`

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


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