code: public List<Diff> getDiff(Object projectIdOrPath, String sha) throws GitLabApiException {
          Response response = get(Response.Status.OK, null, "projects", getProjectIdOrPath(projectIdOrPath), "repository", "commits", sha, "diff");
          return (response.readEntity(new GenericType<List<Diff>>() {}));
      }
docs: Get the list of diffs of a commit in a project.
  
  <pre><code>GitLab Endpoint: GET /projects/:id/repository/commits/:sha/diff</code></pre>
  
  @param projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
  @param sha a commit hash or name of a branch or tag
  @return a List of Diff instances for the specified project ID/sha pair
  @throws GitLabApiException GitLabApiException if any exception occurs during execution