MediaManager.php
protected function getAbsolutePath($path) {
        return null === $path ? null : join(DIRECTORY_SEPARATOR, array($this->getUploadRootDir(), $path));
    }
protected function getAbsolutePath($path) {
        return null === $path ? null : join(DIRECTORY_SEPARATOR, array($this->getUploadRootDir(), $path));
    }
Retrieve/Generate the absolute path (where the real file can be found)
for the given media