 sufficient.
 </p>

 <p>
     Note - this method will be run on the main thread so it should not perform blocking operations and should
     finish quickly.
 </p>
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="cancel()"><!-- --></A><H3>
cancel</H3>
<PRE>
void <B>cancel</B>()</PRE>
<DL>
<DD>A method that will be called when a load is no longer relevant and has been cancelled. This method does not need
 to guarantee that any in process loads do not finish. It also may be called before a load starts or after it