Bug 185898 ReportItemHandle needs to add two method: getAvailableDataBindingReferenceList and getDataBindingType.
ReportItemHandle needs to add two method: getAvailableDataBindingReferenceList and getDataBindingType. The first method provider the available ReportItem list of DataBindingReference. The second method provider the type of the DataBinding.
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/api/ReportItemHandleTest.java
TOCHandle tocHandle = labelHandle.addTOC( toc );
		assertNotNull( tocHandle );
		assertEquals( "toc", tocHandle.getExpression( ) );
		
		tocHandle.setProperty( DesignChoiceConstants.CHOICE_FONT_WEIGHT,
				DesignChoiceConstants.FONT_WEIGHT_BOLD );
		
		StyleHandle style = designHandle.getElementFactory( )
				.newStyle( "style" );	
		style.setCanShrink( true );
		style.setFontWeight( DesignChoiceConstants.FONT_WEIGHT_NORMAL );
		designHandle.getStyles( ).add( style );
		
		assertEquals(
				"toc", labelHandle.getStringProperty( ReportItem.TOC_PROP ) );	
		tocHandle.setStyleName( style.getName( ) );
		assertEquals( "style", tocHandle.getStyleName( ) );	
	}
	/**
	 * Tests 'setStringProperty' method.
	 * 
	 * @throws Exception
	 */
	public void testSetTOCProperty( ) throws Exception
	{
		openDesign( "ReportItemHandleTest.xml" );  
		LabelHandle labelHandle = (LabelHandle) designHandle
				.findElement( "bodyLabel" );
		labelHandle.setStringProperty( IReportItemModel.TOC_PROP, "toc" );
		assertEquals(