[#v3_ext_method-it]
= xref:v3_ext_method.adoc[v3&lowbar;ext&lowbar;method]::it
:relfileprefix: ../
:mrdocs:

ASN&period;1 item template used instead of the old&hyphen;style d2i&sol;i2d callbacks when set&period;

== Synopsis

Declared in `&lt;openssl&sol;x509v3&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:ASN1_ITEM_EXP.adoc[ASN1&lowbar;ITEM&lowbar;EXP]* it;
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