private function createVariantParameter()
{
$table = $this->createTable('variant_parameter');
$table->addColumn('variant_id', 'integer');
$table->addColumn('parameter_id', 'integer');
$table->addForeignKeyConstraint($this->variantTable, ['variant_id'], ['id'], ['onDelete' => 'CASCADE']);
$table->addForeignKeyConstraint($this->parameterTable, ['parameter_id'], ['id'], ['onDelete' => 'CASCADE']);
}