private void DoUpgrade()
{
int version = GetDBVersion();
if (version < 0)
{
throw new Exception("Failed to get DB version.");
}
if (version == 0)
{
Repo.AddColumn(nameof(RawCitation), "`VolumeId` TEXT");
version = IncrementDBVersion();
}
if (version == 1)
{
Repo.AddColumn(nameof(Volume), "`ISBN` TEXT");
version = IncrementDBVersion();
}
}