 used by a runtime to request a configuration object from this provider.
 A null value may be passed as an argument for this parameter, in which case the provider is registered for all
 configuration ids (at the indicated layers).</dd>
<dd><code>description</code> - A text String describing the provider. This value may be null.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A String identifier assigned by the factory to the provider registration, and that may be used to remove the
 registration