public function down()
{
foreach ($this->relations as $relation) {
$className = "REBELinBLUE\\Deployer\\{$relation}";
$instance = new $className();
$table = $instance->getTable();
Schema::table($table, function (Blueprint $table) {
$table->dropColumn('target_id');
$table->dropColumn('target_type');
});
}
}