protected void doPreview(final boolean isUpdateFilter) {
        loadingBox.show();
        previewTable.show(dataSetDef,
                          dataSetDef.getColumns(),
                          new DataSetEditorListener(isUpdateFilter));
    }
protected void doPreview ( final boolean isUpdateFilter ) { loadingBox . show ( ) ; previewTable . show ( dataSetDef , dataSetDef . getColumns ( ) , new DataSetEditorListener ( isUpdateFilter ) ) ; }
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* PRIVATE EDITOR METHODS **
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