<area shape="rect" id="node1" href="$classMallinfoMemoryUsageObserver.html" title="MallinfoMemoryUsageObserver" alt="" coords="5,5,235,35"> <area shape="rect" id="node3" href="$classMemoryUsageObserver.html" title="MemoryUsageObserver" alt="" coords="284,5,463,35">