Bug 184762 BIRT Model - Enhancments to the level defintion
xtab/org.eclipse.birt.report.item.crosstab.core/src/org/eclipse/birt/report/item/crosstab/core/de/LevelViewHandle.java
*/
	public void setPageBreakAfter( String value ) throws SemanticException
	{
		handle.setStringProperty( PAGE_BREAK_AFTER_PROP, value );
	}
	/**
	 * Returns the aggregation header location of this level view. The return
	 * value is defined in <code>ICrosstabConstants</code> and can be one of:
	 * 
	 * <ul>
	 * <li><code>AGGREGATION_HEADER_LOCATION_BEFORE</code>
	 * <li><code>AGGREGATION_HEADER_LOCATION_AFTER</code>
	 * </ul>
	 * 
	 * @return the aggregation header location of this level view
	 */
	public String getAggregationHeaderLocation( )
	{
		return handle.getStringProperty( AGGREGATION_HEADER_LOCATION_PROP );
	}
	/**
	 * Sets the aggregation header location of this level view. The input value
	 * can be one of:
	 * <ul>
	 * <li><code>AGGREGATION_HEADER_LOCATION_BEFORE</code>
	 * <li><code>AGGREGATION_HEADER_LOCATION_AFTER</code>
	 * </ul>
	 * 
	 * @param value
	 *            the aggregation header location to set