/**
  * @param DatagridConfiguration $config
  *
  * @return string|null
  */
 protected function getEntity(DatagridConfiguration $config)
 {
     if ($this->entityClassName === null) {
         $this->entityClassName = $this->gridConfigurationHelper->getEntity($config);
     }
     return $this->entityClassName;
 }
 /**
  * @dataProvider getDatagridConfigurationDataProvider
  *
  * @param array $param
  */
 public function testGetEntity($param)
 {
     $config = DatagridConfiguration::create($param);
     $this->assertEquals(self::ENTITY_CLASS, $this->gridConfigurationHelper->getEntity($config));
 }