public function testIsMultiField()
 {
     $field = new Field($this->I->createQueryBuilder(), 'field1', 23, true);
     $this->assertFalse($field->isMultiField());
     $field = new Field($this->I->createQueryBuilder(), 'field1,field2', 23, true);
     $this->assertTrue($field->isMultiField());
 }