id() публичный статический Метод

public static id ( )
 /**
  * @return TextNode
  * @SuppressWarnings(PHPMD.ShortMethodName)
  */
 public function id()
 {
     return TransactionSearch::id();
 }
 public function test_rangeNode_canSearchOnMultipleStatuses()
 {
     $transaction = Braintree\Transaction::sale(['amount' => '1000.00', 'creditCard' => ['number' => '4111111111111111', 'expirationDate' => '05/12'], 'options' => ['submitForSettlement' => true]])->transaction;
     $twenty_min_ago = date_create("now -20 minutes", new DateTimeZone("UTC"));
     $ten_min_ago = date_create("now -10 minutes", new DateTimeZone("UTC"));
     $ten_min_from_now = date_create("now +10 minutes", new DateTimeZone("UTC"));
     $collection = Braintree\Transaction::search([Braintree\TransactionSearch::id()->is($transaction->id), Braintree\TransactionSearch::authorizedAt()->between($twenty_min_ago, $ten_min_ago), Braintree\TransactionSearch::submittedForSettlementAt()->between($twenty_min_ago, $ten_min_ago)]);
     $this->assertEquals(0, $collection->maximumCount());
     $collection = Braintree\Transaction::search([Braintree\TransactionSearch::id()->is($transaction->id), Braintree\TransactionSearch::authorizedAt()->between($ten_min_ago, $ten_min_from_now), Braintree\TransactionSearch::submittedForSettlementAt()->between($ten_min_ago, $ten_min_from_now)]);
     $this->assertEquals(1, $collection->maximumCount());
     $this->assertEquals($transaction->id, $collection->firstItem()->id);
 }