[#Descriptor-ExpandPrivate]
= xref:Descriptor.adoc[Descriptor]::ExpandPrivate
:relfileprefix: ../
:mrdocs:

Expand the private key for a descriptor at a specified position, if possible.

== Synopsis

Declared in `<script/descriptor.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
virtual
void
ExpandPrivate(
    int pos,
    xref:SigningProvider.adoc[SigningProvider] const& provider,
    xref:FlatSigningProvider.adoc[FlatSigningProvider]& out) const = 0;
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *pos* [in]
| The position at which to expand the descriptor. If IsRange() is false, this is ignored.
| *provider* [in]
| The provider to query for the private keys.
| *out* [out]
| Any private keys available for the specified `pos`.
|===


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