if (!result.isEmpty()) {
                delete(userDN, adminEnv);
            } else {
                logger.info("{} does not exist in LDAP server.", user.getName());
            }
        });

    }

    public void insert(final Role role) {
        if (!fessConfig.isLdapAdminEnabled()) {
            return;
        }

                        // request digest
                        // Ignore a missing signature for SMB < 3.0, as
                        // - the specification does not clearly require that (it does for SMB3+)
                        // - there seem to be server implementations (known: EMC Isilon) that do not sign the final
                        // response

    }


    /**
     * The CIFS protocol provides for DOS "wildcards" to be used as
     * a performance enhancement. The client does not have to filter
     * the names and the server does not have to return all directory
     * entries.
     * <p>
     * The wildcard expression may consist of two special meta

                }
                return ssn.acquire();
            }
            else if ( log.isTraceEnabled() ) {
                log.trace("Existing session " + ssn + " does not match " + tf.getCredentials());
            }
        }

        /* logoff old sessions */
        if ( tf.getConfig().getSessionTimeout() > 0 && this.sessionExpiration < ( now = System.currentTimeMillis() ) ) {