function outputMigrationHeadline(AbstractMigration $migration)
{
global $lastMigration;
if ($migration !== $lastMigration) {
outputHeadline('Migration %s (%s)', 1, array($migration->getIdentifier(), formatVersion($migration->getVersionNumber())));
$description = $migration->getDescription();
if ($description !== null) {
outputLine($description);
outputLine();
}
$lastMigration = $migration;
}
}