public function latest()
{
$migrations = $this->find_migrations();
if (empty($migrations)) {
$this->_error_string = $this->lang->line('migration_none_found');
return FALSE;
}
$last_migration = basename(end($migrations));
// Calculate the last migration step from existing migration
// filenames and proceed to the standard version migration
return $this->version($this->_get_migration_number($last_migration));
}