public function testGetSetNormalPaymentExemption()
 {
     $this->poa->setNormalPaymentExemption(null);
     $this->assertEquals(PowerOfAttorney::PAYMENT_OPTION_NOT_SET, $this->poa->getPaymentExemption());
     $this->assertNull($this->poa->getNormalPaymentExemption());
     $this->poa->setNormalPaymentExemption(false);
     $this->assertEquals(PowerOfAttorney::PAYMENT_OPTION_FALSE, $this->poa->getPaymentExemption());
     $this->assertFalse($this->poa->getNormalPaymentExemption());
     $this->poa->setNormalPaymentExemption(true);
     $this->assertEquals(PowerOfAttorney::PAYMENT_OPTION_TRUE, $this->poa->getPaymentExemption());
     $this->assertTrue($this->poa->getNormalPaymentExemption());
 }