public ContentPreviewingServiceBuilder requestPreviewSanitizer(
            BiFunction<? super RequestContext, String,
                    ? extends @Nullable Object> requestPreviewSanitizer) {
        this.requestPreviewSanitizer = requireNonNull(requestPreviewSanitizer, "requestPreviewSanitizer");
        return this;
    }
Sets the {@link BiFunction} to use to sanitize request content preview. It is common to have the
{@link BiFunction} that removes sensitive content, such as an address, before logging. If unset, will
not sanitize request content preview.
core/src/main/java/com/linecorp/armeria/server/logging/ContentPreviewingServiceBuilder.java