Bug 183918 get relative file path of linkage library
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/library/DesignLoadLibraryTest.java
*/
	private void checkLibrarySequence( LibraryHandle[] libraries )
	{
		PropertyHandle propHandle = designHandle
				.getPropertyHandle( Module.LIBRARIES_PROP );
		for ( int i = 0; i < 3; i++ )
		{
			assertEquals( libraries[i], designHandle.getAllLibraries( ).get( i ) );
			assertEquals( libraries[i].getNamespace( ),
					( (IncludedLibraryHandle) propHandle.getAt( i ) )
							.getNamespace( ) );
		}
	}
	/**
	 * Tests the writer.
	 * 
	 * @throws Exception
	 *             if any exception
	 */
	public void testWriter( ) throws Exception
	{
		openDesign( "DesignWithElementReferenceLibrary.xml" ); 
		save( );
		compareFile( "DesignWithElementReferenceLibrary_golden.xml" ); 
	}
	/**
	 * Tests the structure reference.
	 * 
	 * @throws Exception
	 *             if any exception