public function testListAddressBooksForContact()
 {
     $contact = array('Email' => '*****@*****.**', 'AudienceType' => 'B2B', 'OptInType' => 'Single', 'EmailType' => 'Html', 'Notes' => 'This is an API test contact');
     $result = $this->object->ListAddressBooksForContact($contact);
     $this->assertFalse($result);
     $fields = array('FIRSTNAME' => 'John', 'LASTNAME' => 'Test');
     $this->object->AddContactToAddressBook($contact, $fields, $this->addressBookId);
     $result = $this->object->ListAddressBooksForContact($contact);
     $this->assertTrue(gettype($result) == 'object');
     $this->assertTrue($result->ID == $this->addressBookId);
 }