Split long assigments onto several lines

Assigments may be split onto several lines when the character/line limit would be exceeded. The equal sign has to be positioned onto the following line, and indented by 4 characters.

<?php

$GLOBALS
['TSFE']->additionalHeaderData[$this->strApplicationName]
    = 
$this->xajax->getJavascript(t3lib_extMgm::siteRelPath('nr_xajax'));
?>