return canContain( content.getDefn( ) );
Iterator iter = contentElements.iterator( ); while ( iter.hasNext( ) ) { ElementDefn element = (ElementDefn) iter.next( ); if ( type.isKindOf( element ) ) return true; } return false;
	public final boolean canContain( DesignElement content )	{		return canContain( content.getDefn( ) );	}