@Test
    public void testGetItemValue() {
        when(apolloClient.getItemValue(Mockito.any())).thenReturn("42");
        assertEquals("42", apolloClient.getItemValue("Key"));
        verify(apolloClient).getItemValue(Mockito.any());
    }
Method under test: {@link ApolloClient#getItemValue(String)}.
shenyu-admin-listener/shenyu-admin-listener-apollo/src/test/java/org/apache/shenyu/admin/listener/apollo/ApolloClientTest.java