chingStrategy.EXPIRATION_DATE_KEY">Constant Field Values</a></dd></dl>
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<h4>LAST_REFRESH_DATE_KEY</h4>
<pre>public static final&nbsp;<a href="http://d.android.com/reference/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> LAST_REFRESH_DATE_KEY</pre>
<div class="block">The key used by Session to store the last refresh date value in the
 Bundle during load and sav