code: public Pager<Commit> getCommits(Object projectIdOrPath, int mergeRequestIid, int itemsPerPage) throws GitLabApiException {
          return (new Pager<Commit>(this, Commit.class, itemsPerPage, null,
                  "projects", getProjectIdOrPath(projectIdOrPath), "merge_requests", mergeRequestIid, "commits"));
      }
docs: Get a Pager of merge request commits.
  
  <p>NOTE: GitLab API V4 uses IID (internal ID), V3 uses ID to identify the merge request.</p>
  
  <pre><code>GitLab Endpoint: GET /projects/:id/merge_requests/:merge_request_iid/commits</code></pre>
  
  @param projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
  @param mergeRequestIid the internal ID of the merge request
  @param itemsPerPage the number of Commit instances that will be fetched per page
  @return a Pager containing the commits for the specified merge request
  @throws GitLabApiException GitLabApiException if any exception occurs during execution