public static void unbindGlobalLockFlag() {
        Boolean lockFlag = (Boolean) CONTEXT_HOLDER.remove(KEY_GLOBAL_LOCK_FLAG);
        if (LOGGER.isDebugEnabled() && lockFlag != null) {
            LOGGER.debug("unbind global lock flag");
        }
    }
@Test
    public void testUnBindGlobalLockFlag() {
        RootContext.bindGlobalLockFlag();
        assertThat(RootContext.requireGlobalLock()).isEqualTo(true);
        RootContext.unbindGlobalLockFlag();
        assertThat(RootContext.requireGlobalLock()).isEqualTo(false);
    }