How to access change set file information

    public static void main(ITeamRepository repo) throws Exception {

        IWorkspaceManager wsmgr = SCMPlatform.getWorkspaceManager(repo);

        IItemManager imgr = (IItemManager) repo.getClientLibrary(IItemManager.class);

        IVersionableManager vmgr = (IVersionableManager) repo.getClientLibrary(IVersionableManager.class);

        IChangeSetSearchCriteria criteria = IChangeSetSearchCriteria.FACTORY.newInstance();

        // TODO set the cs search criteria

        List<IChangeSetHandle> list = wsmgr.findChangeSets(criteria, 100, null);

        for (IChangeSetHandle handle : list) {

            IChangeSet cs = (IChangeSet) imgr.fetchCompleteState(handle, null);

            IContributorHandle authorHandle = cs.getAuthor();

            IContributor author = (IContributor) imgr.fetchCompleteState(authorHandle, null);

            // TODO do something with the author

            List<IChange> changes = cs.changes();

            for (IChange change : changes) {

                IVersionableHandle beforeHandle = change.beforeState();

                IVersionable before = vmgr.fetchCompleteState(beforeHandle, null);

                // TODO do something with the before state

                IVersionableHandle afterHandle = change.afterState();

                IVersionable after = vmgr.fetchCompleteState(afterHandle, null);

                // TODO do something with the after state

            }

        }

    }