/**
  * Adds a PEAR-like prefix.
  *
  * This will assume with no further checks that $prefix contains no namespace
  * separator.
  *
  * @param string $prefix
  *   The prefix, e.g. 'Acme_FooPackage_'
  * @param string|string[] $paths
  *   An array of paths, or one specific path.
  *   E.g. 'lib' for $relative = TRUE,
  *   or 'sites/all/libraries/AcmeFooPackage/lib' for $relative = FALSE.
  * @param bool $relative
  *   If TRUE, the paths will be relative to $this->localDirectory.
  */
 function addPear($prefix, $paths, $relative = TRUE) {
   $relative && $this->prependToPaths($paths);
   $this->master->addPear($prefix, $paths);
 }