RequestTracingFilter implements Filter { protected HttpTagAndSpanNamingAdapter<HttpServletRequest, HttpServletResponse> getDefaultTagAdapter() { return ServletRequestTagAdapter.getDefaultInstance(); }  @Override @SuppressWarnings("RedundantThrows") void init(FilterConfig filterConfig); @Override void destroy(); @Override void doFilter(ServletRequest request,
                         ServletResponse response,
                         FilterChain filterChain); static final String FILTER_HAS_ALREADY_EXECUTED_ATTRIBUTE; @Deprecated
    static final String ERROR_REQUEST_URI_ATTRIBUTE; static final String USER_ID_HEADER_KEYS_LIST_INIT_PARAM_NAME; static final String TAG_AND_SPAN_NAMING_STRATEGY_INIT_PARAM_NAME; static final String TAG_AND_SPAN_NAMING_ADAPTER_INIT_PARAM_NAME; }
@Test public void getDefaultTagAdapter_works_as_expected() { RequestTracingFilter filter = new RequestTracingFilter(); assertThat(filter.getDefaultTagAdapter()) .isNotNull() .isSameAs(ServletRequestTagAdapter.getDefaultInstance()); }