code: public List<Issue> getIssues(Object projectIdOrPath, IssueFilter filter, int page, int perPage) throws GitLabApiException {
          GitLabApiForm formData = filter.getQueryParams(page, perPage);
          Response response = get(Response.Status.OK, formData.asMap(), "projects", getProjectIdOrPath(projectIdOrPath), "issues");
          return (response.readEntity(new GenericType<List<Issue>>() {}));
      }
docs: Get a list of project's issues.
  
  <pre><code>GitLab Endpoint: GET /projects/:id/issues</code></pre>
  
  @param projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
  @param filter {@link IssueFilter} a IssueFilter instance with the filter settings.
  @param page the page to get.
  @param perPage the number of projects per page.
  @return the list of issues in the specified range.
  @throws GitLabApiException if any exception occurs