code: public CmsLockFilter filterProject(CmsUUID projectId) {
  
          CmsLockFilter filter = (CmsLockFilter)clone();
          filter.m_projectId = projectId;
          return filter;
      }
docs: Returns an extended filter with the given project restriction.<p>
  
  @param projectId the project to filter the locks with
  
  @return an extended filter with the given project restriction