public SELF onResponseTrailers(
            BiPredicate<? super ClientRequestContext, ? super HttpHeaders> responseTrailersFilter) {
        this.responseTrailersFilter = combinePredicates(this.responseTrailersFilter, responseTrailersFilter,
                                                        "responseTrailersFilter");
        return self();
    }
Adds the specified {@code responseTrailersFilter}. Note that using this method makes the entire
response buffered, which may lead to excessive memory usage.

<p>When this is used for a {@link CircuitBreakerRule}, and the specified {@code responseTrailersFilter}
returns {@code true}, a {@link Response} is reported as a success or failure to a
{@link CircuitBreaker} or ignored depending on the build methods({@code #thenSuccess()},
{@code #thenFailure()} and {@code #thenIgnore()}).
core/src/main/java/com/linecorp/armeria/client/AbstractRuleBuilder.java