code: public Pager<Variable> getVariables(Object projectIdOrPath, int itemsPerPage) throws GitLabApiException {
          return (new Pager<Variable>(this, Variable.class, itemsPerPage, null, "projects", getProjectIdOrPath(projectIdOrPath), "variables"));
      }
docs: Get a Pager of variables belonging to the specified project.
  
  <pre><code>GitLab Endpoint: GET /projects/:id/variables</code></pre>
  
  @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance, required
  @param itemsPerPage the number of Variable instances that will be fetched per page
  @return a Pager of variables belonging to the specified project
  @throws GitLabApiException if any exception occurs