Bug 211703 Support muti-view on report item.
As title described.
xtab/org.eclipse.birt.report.item.crosstab.core/src/org/eclipse/birt/report/item/crosstab/core/de/CrosstabReportItemHandle.java
throw new CrosstabException(
					this.getModelHandle( ).getElement( ),
					Messages
							.getString( "CrosstabReportItemHandle.error.locate.column.cell" ) ); 
		}
	}
	/**
	 * Gets the measures property handle.
	 * 
	 * @return measures property handle
	 */
	PropertyHandle getMeasuresProperty( )
	{
		return handle.getPropertyHandle( MEASURES_PROP );
	}
	/**
	 * Gets the rows property handle.
	 * 
	 * @return rows property handle
	 */
	PropertyHandle getRowsProperty( )
	{
		return handle.getPropertyHandle( ROWS_PROP );
	}
	/**
	 * Gets the columns property handle.
	 * 
	 * @return columns property handle
	 */
	PropertyHandle getColumnsProperty( )