Bug 210496 Add hasStyle property in reportItemModel extension point
When chart gets reportItem's properties by extending ReportItem, style properties are null. Hence, model needs to add hasStyle property in reportItemModel extension point
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/extension/PeerExtensionTest.java
Iterator arguList = method.argumentListIterator( );
		IArgumentInfoList argus = (IArgumentInfoList) arguList.next( );
		IArgumentInfo argu = (IArgumentInfo) argus.argumentsIterator( ).next( );
		IClassInfo clazz = argu.getClassType( );
		assertEquals( "java.lang.Boolean", clazz.getName( ) ); 
	}
	/**
	 * Tests newElementFrom and writer for extended item with element
	 * properties.
	 * 
	 * @throws Exception
	 */
	public void testElementProperty( ) throws Exception
	{
		openDesign( FILE_NAME_1 );
		designHandle.includeLibrary( "LibraryWithElementProperty.xml", "lib" ); 
		LibraryHandle lib = designHandle.getLibrary( "lib" ); 
		DesignElementHandle libBox = lib.findElement( "LibraryBox" ); 
		DesignElementHandle designBox = designHandle.getElementFactory( )
				.newElementFrom( libBox, "designBox" ); 
		designHandle.getBody( ).add( designBox );
		save( );
		assertTrue( compareFile( "PeerExtensionTest_golden_3.xml" ) ); 
	}
	/**
	 * Test useOwnModel function.
	 * 
	 * @throws Exception
	 */
	public void testUseOwnModel( ) throws Exception