se <code>null</code>.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="isSubstitutionGroupExclusion(short)"><!-- --></A><H3>
isSubstitutionGroupExclusion</H3>
<PRE>
public boolean <B>isSubstitutionGroupExclusion</B>(short&nbsp;exclusion)</PRE>
<DL>
<DD>Convenience method that checks if <code>exclusion</code> is a 
 substitution group exclusion for this element declaration.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>exclusion</CODE> - <code>DERIVATION_EXTENSION, DERIVATION_RESTRICTION</code> or 
  