/**
  * Register an additional namespace for this module.
  * Note: Drupal\<module name>\ is already registered for <module dir>/lib.
  *
  * @deprecated
  *
  * @param string $namespace
  *   The namespace
  * @param string $psr_0_root_dir
  *   PSR-0 root dir.
  *   If $relative is TRUE, this is relative to the current module dir.
  *   If $relative is FALSE, this is an absolute path.
  * @param boolean $relative
  *   Whether or not the path is relative to the current extension dir.
  */
 function namespaceRoot($namespace, $psr_0_root_dir = NULL, $relative = TRUE)
 {
     $psr_0_root_dir = $this->processDir($psr_0_root_dir, $relative);
     $this->finder->registerNamespaceRoot($namespace, $psr_0_root_dir);
 }