code: @GET
      @Path("commitTree/{commitId}")
      public List<CommitTreeInfo> getCommitTree(final @PathParam("commitId") String commitId) throws Exception {
          return gitReadOperation(new GitOperation<List<CommitTreeInfo>>() {
              @Override
              public List<CommitTreeInfo> call(Git git, GitContext context) throws Exception {
                  return doGetCommitTree(git, commitId);
              }
          });
      }
docs: Returns the file changes in a commit