public function testAddDataTransformer()
{
$this->builder->addTransformer($this->getTransformerMock(), 'foo');
list($transformer) = $this->builder->getModifiers()[0];
$this->assertInstanceOf('FM\\Feeder\\Modifier\\Item\\Transformer\\DataTransformer', $transformer, '->addTransformer() wraps a Transformer in a DataTransformer ');
}
