code: public Stream<Milestone> getMilestonesStream(Object projectIdOrPath) throws GitLabApiException {
          return (getMilestones(projectIdOrPath, getDefaultPerPage()).stream());
      }
docs: Get a Stream of project milestones.
  
  @param projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
  @return a Stream of the milestones associated with the specified project
  @throws GitLabApiException if any exception occurs