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<p>Returns a watcher for any updates to keys that match the one of <code>keys</code> argument, which could include wildcards.</p>
<p>A <code>NULL</code> entry will be posted when the watcher has received all initial values.</p>
<p>Call <a class="el" href="group__kv_watcher.html#ga562c216a0199c30455af4c2da46000e5" title="Returns the next entry for this watcher.">kvWatcher_Next</a> to get the next <a class="el" href="group__types_group.html#gad489fb40