Bug 167545 Copy a cascading parameter group and paste it to another parameter group causes an exception thrown
Steps to reproduce: 1.Copy a cascading parameter group using short cut key "Ctrl+x"/"Ctrl+c", or choosing context menu "Cut"/"Copy"; 2.Paste it to another parameter group using short cut key "Ctrl+v", or choosing context menu "Paste"; Expected result: The source one is pasted in the destination. Actual result: An exception thrown org.eclipse.birt.report.model.api.command.ContentException: The Cascading Parameter Group("Source") is not allowed in the slot (parameters) of Parameter Group("Destination").
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
ActionHandle actionHandle = null;
		if ( element instanceof LabelHandle )
		{
			actionHandle = ( (LabelHandle) element ).setAction( action );
		}
		else if ( element instanceof DataItemHandle )
		{
			actionHandle = ( (DataItemHandle) element ).setAction( action );
		}
		else if ( element instanceof ImageHandle )
		{
			actionHandle = ( (ImageHandle) element ).setAction( action );
		}
		return actionHandle;
	}
	private static Object getModelFontSize( DesignElementHandle handle )
	{
		
		
		
		StyleHandle styleHandle = handle.getPrivateStyle( );
		Object fontSizeValue = null;
		if ( styleHandle != null )
		{
			fontSizeValue = handle.getPrivateStyle( ).getFontSize( ).getValue( );
		}
		return fontSizeValue;
	}
	/**
	 * @deprecated