/**
  * Creates a new RoleInstance from parsed response body.
  * 
  * @param array $parsed The parsed response body in array representation.
  * 
  * @return RoleInstance
  */
 public static function create($parsed)
 {
     $roleInstance = new self();
     $roleName = Utilities::tryGetValue($parsed, Resources::XTAG_ROLE_NAME);
     $instanceName = Utilities::tryGetValue($parsed, Resources::XTAG_INSTANCE_NAME);
     $instanceStatus = Utilities::tryGetValue($parsed, Resources::XTAG_INSTANCE_STATUS);
     $instanceUpgradeDomain = Utilities::tryGetValue($parsed, Resources::XTAG_INSTANCE_UPGRADE_DOMAIN);
     $instanceFaultDomain = Utilities::tryGetValue($parsed, Resources::XTAG_INSTANCE_FAULT_DOMAIN);
     $instanceSize = Utilities::tryGetValue($parsed, Resources::XTAG_INSTANCE_SIZE);
     $instanceStateDetails = Utilities::tryGetValue($parsed, Resources::XTAG_INSTANCE_STATE_DETAILS);
     $instanceErrorCode = Utilities::tryGetValue($parsed, Resources::XTAG_INSTANCE_ERROR_CODE);
     $roleInstance->setInstanceErrorCode($instanceErrorCode);
     $roleInstance->setInstanceFaultDomain(intval($instanceFaultDomain));
     $roleInstance->setInstanceName($instanceName);
     $roleInstance->setInstanceSize($instanceSize);
     $roleInstance->setInstanceStateDetails($instanceStateDetails);
     $roleInstance->setInstanceStatus($instanceStatus);
     $roleInstance->setInstanceUpgradeDomain(intval($instanceUpgradeDomain));
     $roleInstance->setRoleName($roleName);
     return $roleInstance;
 }