public SELF onResponseHeaders(
            BiPredicate<? super ClientRequestContext, ? super ResponseHeaders> responseHeadersFilter) {
        this.responseHeadersFilter = combinePredicates(this.responseHeadersFilter, responseHeadersFilter,
                                                       "responseHeadersFilter");
        return self();
    }
Adds the specified {@code responseHeadersFilter}.

<p>When this is used for a {@link CircuitBreakerRule}, and the specified {@code responseHeadersFilter}
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