Bug 157744 [Regression]GUI has memory leak
Causes by 153732, designer has a regression to hold the report design handle in a hashmap. That causes the report design can not be released.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/editparts/TableEditPart.java
/**
	 * Inserts group in table.
	 * 
	 * @param position
	 *            insert position
	 */
	public boolean insertGroup( int position )
	{
		return UIUtil.createGroup( getTableAdapter( ).getHandle( ), position );
	}
	/**
	 * Removes group in table
	 * 
	 * @param group
	 */
	public void removeGroup( Object group )
	{
		try
		{
			( (TableHandleAdapter) getModelAdapter( ) ).removeGroup( group );
		}
		catch ( Exception e )
		{
			ExceptionHandler.handle( e );
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.designer.core.model.ITableAdaptHelper#getClientAreaSize()