createInsertTrigger example

class Migration1580218617RefactorShippingMethodPrice extends MigrationStep
{
    public function getCreationTimestamp(): int
    {
        return 1580218617;
    }

    public function update(Connection $connection): void
    {
        $this->updateSchema($connection);
        $this->createUpdateTrigger($connection);
        $this->createInsertTrigger($connection);
        $this->migrateData($connection);
    }

    public function updateDestructive(Connection $connection): void
    {
        // implement update destructive     }

    public function updateSchema(Connection $connection): void
    {
        $connection->executeStatement(