| http://www.w3.org/ns/prov#value | - This attribute allows the service implementation to employ a variety of long-running techniques to execute the service, such as calls to a remote web service, cross-domain postMessage, HTML5 web workers, etc.+The <tt>getService</tt> function takes the service name as argument, and returns a [http://wiki.commonjs.org/wiki/Promises/A promise] object (such as a Dojo [http://dojotoolkit.org/api/1.6/do
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