 	import weave.api.registerLinkableChild;
 	import weave.compiler.StandardLib;
 	import weave.data.BinClassifiers.NumberClassifier;
-	import weave.data.BinningDefinitions.CategoryBinningDefinition;
 	import weave.data.BinningDefinitions.DynamicBinningDefinition;
 	import weave.data.BinningDefinitions.SimpleBinningDefinition;
 	import weave.utils.ColumnUtils;

				if (_column && _binClassifiers)
				{
					// high priority because not much can be done without data
					WeaveAPI.StageUtils.startTask(this, _asyncIterate, WeaveAPI.TASK_PRIORITY_HIGH, triggerCallbacks);
				}
			}
		}

		 */
		private function validateBins():void
		{
			if (_resultTriggerCount != binningDefinition.asyncResultCallbacks.triggerCounter)
			{
				if (WeaveAPI.SessionManager.linkableObjectIsBusy(this))
					return;
				
				_resultTriggerCount = binningDefinition.asyncResultCallbacks.triggerCounter;
				// reset cached values
				_column = internalDynamicColumn.getInternalColumn();
