/**
  * @param CommitIdentifier $identifier
  *
  * @return bool
  */
 public function equals(CommitIdentifier $identifier)
 {
     return $this->uuid->toString() === $identifier->toString();
 }
 /**
  * @depends testCanBeConstructedWithAUuidString
  */
 public function testCanBeTranslatedIntoAString(CommitIdentifier $commitIdentifier)
 {
     $this->assertEquals(Uuid::NIL, $commitIdentifier->toString());
 }