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/ReportItemExtensionTest.java
{
			itemHandle.getReportItem( );
			fail( );
		}
		catch ( ExtendedElementException e )
		{
			assertEquals( SemanticError.DESIGN_EXCEPTION_EXTENSION_NOT_FOUND, e
					.getErrorCode( ) );
		}
		testExtendedItemWithoutExtension( itemHandle );
	}
	/**
	 * Tests method calls on an extended item without the valid extension.
	 * 
	 * @param itemHandle
	 *            the handle of extended item.
	 * @throws SemanticException
	 */
	private void testExtendedItemWithoutExtension( ExtendedItemHandle itemHandle )
			throws SemanticException
	{
		
		itemHandle.setStringProperty( ReportItem.Y_PROP, "12.5cm" ); 
		try
		{
			itemHandle.setStringProperty( "test2", 
					"the value of undefined property" ); 
			fail( );
		}
		catch ( PropertyNameException e )