code: public List<Variable> getVariables(Object projectIdOrPath) throws GitLabApiException {
          return (getVariables(projectIdOrPath, getDefaultPerPage()).all());
      }
docs: Get list of a project's variables.
  
  <pre><code>GitLab Endpoint: GET /groups/:id/variables</code></pre>
  
  @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance, required
  @return a list of variables belonging to the specified project
  @throws GitLabApiException if any exception occurs