/**
  * Gets the join condition the given join identifier
  *
  * @param string $joinId
  *
  * @return null|string
  */
 protected function getJoinCondition($joinId)
 {
     return $this->joinIdHelper->getJoinCondition($joinId);
 }
 /**
  * @dataProvider getJoinConditionProvider
  */
 public function testGetJoinCondition($joinId, $expected)
 {
     $this->assertEquals($expected, $this->helper->getJoinCondition($joinId));
 }