Function write_state_database_format_version_to_disk 

pub fn write_state_database_format_version_to_disk(
    config: &Config,
    changed_version: &Version,
    network: &Network,
) -> Result<(), BoxError>

Writes changed_version to the on-disk state database after the format is changed. (Or a new database is created.)

See write_database_format_version_to_disk() for details.