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