[#BlockFilterIndex-CustomOptions]
= xref:BlockFilterIndex.adoc[BlockFilterIndex]::CustomOptions
:relfileprefix: ../
:mrdocs:

Request notifications for pruned blocks so filters can be built.

== Synopsis

Declared in `<index/blockfilterindex.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
virtual
xref:interfaces/Chain.adoc[interfaces::Chain::NotifyOptions]
CustomOptions() override;
----

== Return Value

The notification options requested by this index.


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