Bug 184762 BIRT Model - Enhancments to the level defintion
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ElementFactory.java
* @return a handle to the cell
	 */
	public CellHandle newCell( )
	{
		Cell element = new Cell( );
		module.makeUniqueName( element );
		return element.handle( module );
	}
	/**
	 * Creates a new grid item.
	 * 
	 * @param name
	 *            the optional grid item name. Can be <code>null</code>.
	 * @return a handle to the grid item
	 */
	public GridHandle newGridItem( String name )
	{
		GridItem element = new GridItem( name );
		module.makeUniqueName( element );
		return element.handle( module );
	}
	/**
	 * Creates a new grid item with pre-defined columns and rows.
	 * 
	 * @param name
	 *            the optional grid item name.
	 * @param columnNum
	 *            column number of the grid. If it is less than 0, none column
	 *            will be added.
	 * @param rowNum