code: public function getAliasUsage($withEncapsulation = true)
      {
          $aliases = '';
  
          foreach ($this->aliases as $prefix => $alias) {
              if ($withEncapsulation) {
                  $aliases = ($aliases == '') ? ' (' : $aliases;
                  $aliases .= ' '.$prefix.$alias;
              } else {
                  $aliases = ($aliases == '') ? $prefix.$alias : $aliases.', '.$prefix.$alias;
              }
          }
  
          if ($withEncapsulation) {
              $aliases .= ($aliases == '') ? '' : ' )';
          }
  
          return $aliases;
      }
docs: Retrieve the alias usage as a String.
  
  @return string