PayPal\Api\ExternalFunding::getReferenceId PHP Method

    public function getReferenceId()
    {
        return $this->reference_id;
    }

 /**
  * @depends testSerializationDeserialization
  * @param ExternalFunding $obj
  */
 public function testGetters($obj)
 {
     $this->assertEquals($obj->getReferenceId(), "TestSample");
     $this->assertEquals($obj->getCode(), "TestSample");
     $this->assertEquals($obj->getFundingAccountId(), "TestSample");
     $this->assertEquals($obj->getDisplayText(), "TestSample");
     $this->assertEquals($obj->getAmount(), AmountTest::getObject());
 }