ented Interfaces:</B> <DD><A HREF="../../../../../../gov/nih/nci/cabig/caaers/domain/Retireable.html" title="interface in gov.nih.nci.cabig.caaers.domain">Retireable</A>, gov.nih.nci.cabig.ctms.domain.DomainObject, gov.nih.nci.cabig.ctms.domain.GridIdentifiable, gov.nih.nci.cabig.ctms.domain.MutableDomainObject</DD>
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<DT><PRE>public class <B>Epoch</B><DT>extends <A HREF="../../../../../../gov/nih/nci/cabig/caaers/domain/AbstractMutableRetireableDomainObject.html" title="class in gov.nih.n