code: public List<Issue> getIssues(Object projectIdOrPath, Integer milestoneId) throws GitLabApiException {
          Response response = get(Response.Status.OK, getDefaultPerPageParam(),
                  "projects", getProjectIdOrPath(projectIdOrPath), "milestones", milestoneId, "issues");
          return (response.readEntity(new GenericType<List<Issue>>() {}));
      }
docs: Get the list of issues associated with the specified milestone.
  
  @param projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
  @param milestoneId the milestone ID to get the issues for
  @return a List of Issue for the milestone
  @throws GitLabApiException if any exception occurs