&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="#getFirstNull()" class="signatureLink">getFirstNull</a>():int</div><div class="summaryTableDescription">
		 Call this function to retrieve the first index set to 'null'.</div></td><td class="summaryTableOwnerCol">FlxGroup</td></tr><tr class=""><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol