Returns <code>true</code> if this Scheduler is enabled and ready to begin validation at the appropriate time,
<code>false</code> otherwise.
<p/>
It does <em>not</em> indicate if the validation is actually executing at that instant - only that it is prepared
to do so at the appropriate time.
@return <code>true</code> if this Scheduler is enabled and ready to begin validation at the appropriate time,
<code>false</code> otherwise.
Returns <code>true</code> if this Scheduler is enabled and ready to begin validation at the appropriate time, <code>false</code> otherwise. <p/> It does <em>not</em> indicate if the validation is actually executing at that instant - only that it is prepared to do so at the appropriate time.
@return <code>true</code> if this Scheduler is enabled and ready to begin validation at the appropriate time, <code>false</code> otherwise.