docs: public void getAcl(String resourceName) throws Exception {
  
          CmsAccessControlList acList = m_cms.getAccessControlList(resourceName);
          Iterator<CmsUUID> principals = acList.getPrincipals().iterator();
          while (principals.hasNext()) {
              I_CmsPrincipal p = m_cms.lookupPrincipal(principals.next());
              m_shell.getOut().println(p.getName() + ": " + acList.getPermissions(p.getId()).getPermissionString());
          }
      }