public static String pluginSelectorKey(final String pluginName) {
        return String.join("", pluginName, PLUGIN_SELECTOR);

    }
@Test
    public void testPluginSelectorKey() {
        String mockPlugin = "MockPlugin";
        String mockPluginSelectorKey = RedisKeyConstants.pluginSelectorKey(mockPlugin);
        assertThat(mockPlugin, notNullValue());
        assertThat(String.join("", mockPlugin, PLUGIN_SELECTOR), equalTo(mockPluginSelectorKey));
    }