$svcDocUrl = $link->href;
if (isset($link['http://apinamespace.org/atom/username'])) {
$username = $link['http://apinamespace.org/atom/username'];
$svcDocUrl = $link->href;
if (isset($link['http://apinamespace.org/atom/username'])) {
$username = $link['http://apinamespace.org/atom/username'];