Bug 168172 Add the get() and set() functions of HideDetail parameter on IGroup
Add the get() and set() functions of HideDetail parameter on IGroup, and thus enable the hidedetail shifting on the Group through eventhandler.
engine/org.eclipse.birt.report.engine.tests/test/org/eclipse/birt/report/engine/api/script/element/ElementTest.java
iFilter.setValue2( "100" ); 
		assertEquals( "100", iFilter.getValue2( ) ); 
	}
	/**
	 * Test <code>ISortCondition</code>
	 * 
	 * @throws SemanticException
	 * @throws ScriptException
	 */
	public void testSortCondition( ) throws SemanticException, ScriptException
	{
		TableHandle tableHandle = factory.newTableItem( "table", 3 );
		designHandle.getBody( ).add( tableHandle );
		SortKey sort = StructureFactory.createSortKey( );
		sort.setKey( "key" );
		tableHandle.getPropertyHandle( "sort" ).addItem( sort );
		IListing item = new Listing( tableHandle );
		ISortCondition[] sorts = item.getSortConditions( );
		assertEquals( 1, sorts.length );
		ISortCondition iSort = sorts[0];
		assertEquals( "key", iSort.getKey( ) );
		iSort.setDirection( "desc" ); 
		assertEquals( "desc", iSort.getDirection( ) ); 
		iSort.setKey( "1" ); 
		assertEquals( "1", iSort.getKey( ) ); 
	}
	/**
	 * Test <code>IHideRule</code>
	 * 
	 * @throws SemanticException