@Override
    public boolean canHandleReturnType(Class<?> returnType) {
        return Flux.class.isAssignableFrom(returnType) || Mono.class.isAssignableFrom(returnType);
    }
@Test
    public void testCheckTypes() {
        assertThat(reactorTimeLimiterAspectExt.canHandleReturnType(Mono.class)).isTrue();
        assertThat(reactorTimeLimiterAspectExt.canHandleReturnType(Flux.class)).isTrue();
    }