code: public Stream<MergeRequest> getClosedByMergeRequestsStream(Object projectIdOrPath, Integer issueIid) throws GitLabApiException {
          return (getClosedByMergeRequests(projectIdOrPath, issueIid, getDefaultPerPage()).stream());
      }
docs: Get list containing all the merge requests that will close issue when merged.
  
  <pre><code>GitLab Endpoint: GET /projects/:id/issues/:issue_iid/closed_by</code></pre>
  
  @param projectIdOrPath id, path of the project, or a Project instance holding the project ID or path
  @param issueIid the internal ID of a project's issue
  @return a List containing all the merge requests what will close the issue when merged.
  @throws GitLabApiException if any exception occurs