Bug 179931 Provide new interface IStyle to let extension return the style properties values
Provide the IStyle interface to let extension user can return the style property value list for their extension elements.
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/extension/PeerExtensionTest.java
/*
	 * (non-Javadoc)
	 * 
	 * @see junit.framework.TestCase#setUp()
	 */
	protected void setUp( ) throws Exception
	{
		super.setUp( );
		ThreadResources.setLocale( ULocale.ENGLISH );
	}
	/**
	 * Test initializeReportItem method. when element has virtual parent, also
	 * can be initialized.
	 * 
	 * @throws Exception
	 */
	public void testVirtualExtension( ) throws Exception
	{
		openDesign( FILE_NAME_5 );
		ExtendedItemHandle handle = (ExtendedItemHandle) designHandle
				.findElement( "newHeaderMatrix" ); 
		assertNotNull( handle );
	}
	/**
	 * Tests the parser for the extension and the TestPeer--implementation of
	 * IPeer.
	 */
	public void testExtensionMeta( )
	{
		MetaDataDictionary dd = MetaDataDictionary.getInstance( );