Bug 199834 Enable access to IContent object in IReportItemPresentation layer
In IReportItemPresentation layer, the extended item may want to access properties from current IContent object, for example, bookmark, content style. So we need expose the content object in this layer.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/extension/internal/RowSet.java
{
		return rset.getID( );
	}
	/**
	 * returns the definition for the data row
	 * 
	 * @return the definition for the data row
	 */
	public IRowMetaData getMetaData( )
	{
		return metaData;
	}
	public boolean next( )
	{
		if ( rset != null )
		{
			try
			{
				return rset.next( );
			}
			catch ( BirtException ex )
			{
				context.addException( ex );
				return false;
			}
		}
		return false;
	}
	public Object evaluate( String expr )
	{