/// <summary>
/// Set default internal pubkey.
/// </summary>
/// <param name="pubkey">internal pubkey</param>
public void SetInternalPubkey(SchnorrPubkey pubkey)
{
if (pubkey is null)
{
throw new ArgumentNullException(nameof(pubkey));
}
else if (pubkey.IsValid())
{
internalPubkey = pubkey;
}
}
