Bug 129144 Support suppressDuplicates property on table row in report engine
See 129143 for detail. This only needs to be supported for data item in a detail row of a table.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/ir/ReportItemDesign.java
* @return Returns the x.
	 */
	public DimensionType getX( )
	{
		return x;
	}
	/**
	 * @param x
	 *            The x to set.
	 */
	public void setX( DimensionType x )
	{
		this.x = x;
	}
	/**
	 * @return Returns the y.
	 */
	public DimensionType getY( )
	{
		return y;
	}
	/**
	 * @param y
	 *            The y to set.
	 */
	public void setY( DimensionType y )
	{
		this.y = y;
	}
	/**