/**
  * Constructor.
  *
  * @param string     $key          The requested parameter key
  * @param string     $sourceId     The service id that references the non-existent parameter
  * @param string     $sourceKey    The parameter key that references the non-existent parameter
  * @param \Exception $previous     The previous exception
  * @param string[]   $alternatives Some parameter name alternatives
  */
 public function __construct($key, $sourceId = null, $sourceKey = null, Exception $previous = null, array $alternatives = array())
 {
     $this->key = $key;
     $this->sourceId = $sourceId;
     $this->sourceKey = $sourceKey;
     $this->alternatives = $alternatives;
     if (version_compare(PHP_VERSION, '5.3') < 0) {
         parent::__construct('', 0);
     } else {
         parent::__construct('', 0, $previous);
     }
     $this->updateRepr();
 }
 public function __construct($id, $sourceId = null, Exception $previous = null, array $alternatives = array())
 {
     if (null === $sourceId) {
         $msg = sprintf('You have requested a non-existent service "%s".', $id);
     } else {
         $msg = sprintf('The service "%s" has a dependency on a non-existent service "%s".', $sourceId, $id);
     }
     if ($alternatives) {
         if (1 == count($alternatives)) {
             $msg .= ' Did you mean this: "';
         } else {
             $msg .= ' Did you mean one of these: "';
         }
         $msg .= implode('", "', $alternatives) . '"?';
     }
     if (version_compare(PHP_VERSION, '5.3') < 0) {
         parent::__construct($msg, 0);
     } else {
         parent::__construct($msg, 0, $previous);
     }
     $this->id = $id;
     $this->sourceId = $sourceId;
 }