public static void setTimeout(Integer timeout) {
        CONTEXT_HOLDER.put(KEY_TIMEOUT,timeout);
    }
@Test
    public void testSetTimeout() {
        RootContext.setTimeout(100);
        assertThat(RootContext.getTimeout()).isEqualTo(100);
        RootContext.setTimeout(null);
        assertThat(RootContext.getTimeout()).isEqualTo(null);
    }