PayPal\Api\Details::getTax PHP Method

    public function getTax()
    {
        return $this->tax;
    }

 /**
  * @depends testSerializationDeserialization
  * @param Details $obj
  */
 public function testGetters($obj)
 {
     $this->assertEquals($obj->getSubtotal(), "12.34");
     $this->assertEquals($obj->getShipping(), "12.34");
     $this->assertEquals($obj->getTax(), "12.34");
     $this->assertEquals($obj->getHandlingFee(), "12.34");
     $this->assertEquals($obj->getShippingDiscount(), "12.34");
     $this->assertEquals($obj->getInsurance(), "12.34");
     $this->assertEquals($obj->getGiftWrap(), "12.34");
     $this->assertEquals($obj->getFee(), "12.34");
 }