public function testGetSetDonorSignatureWitnessed()
 {
     $this->assertFalse($this->poa->isAttorneyDeclarationSignatureWitnessed());
     $this->assertFalse($this->poa->getAttorneyDeclarationSignatureWitnessed());
     $this->assertTrue($this->poa->setAttorneyDeclarationSignatureWitnessed(true) instanceof PowerOfAttorney);
     $this->assertTrue($this->poa->isAttorneyDeclarationSignatureWitnessed());
     $this->assertTrue($this->poa->getAttorneyDeclarationSignatureWitnessed());
 }