el">Returns:</span></dt>
<dd>A RegistrationContext or null. When a Non-null value is returned, it is a copy of the registration context
 corresponding to the registration. Null is returned when the registration identifier does not correspond to an active
 registration</dd>
</dl>
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<h3><a id="refresh()">refresh</a></h3>
<div class="memberSignature"><span class="modifiers">public abstract</span>&nbsp;<span class="returnType">void</span>&nbsp;<span